base

1 of 4

noun

ˈbās

plural bases ˈbā-səz How to pronounce base (audio)

: the bottom of something considered as its support : foundation

the base of the mountain

the lamp's heavy base

biology : that part of a bodily organ by which it is attached to another more central structure of the organism

the base of the thumb

c architecture

(1)

: the lower part of a wall, pier, or column considered as a separate architectural feature

(2)

: the lower part of a complete architectural design (as of a monument)

d mathematics

(1)

: a side or face (see face entry 1 sense 5a(5)) of a geometrical figure from which an altitude (see altitude sense 1c(1)) can be constructed

especially : a side or face on which the figure stands

the base of a triangle

(2)

: the length of a base

determining the triangle's base

: a main ingredient

paint having a latex base

: a supporting or carrying ingredient (as of a medicine)

: a first or bottom layer of something on which other elements are added

Overnight, Utah's famous snow has freshly blanketed both runs, adding to a solid base of three feet …

Abby Carroll

: the fundamental part of something : groundwork, basis

the book's theoretical base

her broad base of knowledge

: something (as a group of people) that reliably provides support (such as for a business or political candidate)

—usually singular

efforts to expand their customer basethe band's fan baseBut I do believe that that's a very sore point with many Democrats and could be used to energize their base.

John McCain

Marxism : the economic factors on which all legal, social, and political relations are formed

: the starting point or line for an action or undertaking

plans to make this city his base of operation

J. A. Loftus

: a baseline in surveying

: a center or area of operations

The company has its base in London.

: such as

(1)

: a permanent military installation

a naval base

The troops were ordered back to base.

(2)

: the place from which a military force draws supplies

(3)

: a place where military operations begin

linguistics : root sense 6

"Leave" is the base of the verb "left."

e mathematics

(1)

: a number (such as 5 in 5^6.44 or 5⁷) that is raised to a power (see power entry 1 sense 5a)

especially : the number that when raised to a power equal to the logarithm of a number yields the number itself

The logarithm of 100 to the base 10 is 2 since 10² = 100.

(2)

: a number equal to the number of units in a given digit's place (see place entry 1 sense 8) that for a given system of writing numbers is required to give the numeral 1 in the next higher place

The decimal system uses a base of 10.

also : such a system of writing numbers using an indicated base

Convert from base 10 to base 2.

(3)

: a number that is multiplied by a rate or of which a percentage or fraction is calculated

To find the interest on $90 at 10 percent multiply the base 90 by .10.

: any one of the four stations at the corners of a baseball or softball infield

allowing the batter to reach base

in various games : the starting place or goal

: a point to be considered

His opening remarks touched every base.

chemistry

: any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or able to give up an unshared pair of electrons to an acid

: any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracil

finance : a price level at which a security (see security sense 3) previously declining in price resists further decline

heraldry : the lower part of a heraldic field (see field entry 1 sense 3c)

linguistics : the part of a transformational grammar that consists of rules and a lexicon and generates the deep structures of a language

: an electrode that modulates the current flowing through a bipolar junction transistor according to the voltage applied to the electrode

This gate, which is called a grid in a tube and a base in a transistor, enables a small "controlling" voltage to turn on and off a much larger voltage between the cathode and the anode.

Thom Hartmann

compare gate entry 1 sense 5b

baseless

ˈbā-sləs

adjective

base

2 of 4

verb

based; basing

transitive verb

: to find a foundation or basis for : to find a base (see base entry 1 sense 3a) for

—usually used with on or upon

base an opinion on faulty informationa story based upon real-life events

: to make, form, or serve as a base for

… great roots based the tree columns …

George Macdonald

the company is based in London

clients who are based out of their homes

base

3 of 4

adjective (1)

: lacking or indicating the lack of higher qualities of mind or spirit : ignoble

seemed a base betrayal of idealism

L. M. Sears

appealing to a person's baser instincts

: lacking higher values : degrading

a drab base way of life

: being of comparatively low value and having relatively inferior properties (such as lack of resistance to corrosion)

a base metal such as iron

compare noble entry 1

: containing a larger than usual proportion of base metals

base silver denarii

feudalism

: resembling a villein : servile

a base tenant

: held by villenage

base tenure

archaic : of little height

… the cedar stoops not to the base shrub's foot …

Shakespeare

archaic : baseborn

… base in kind and born to be a slave.

William Cowper

obsolete : low in place or position

… fall to the base earth from the firmament!

Shakespeare

obsolete : bass

basely adverb

baseness noun

base

4 of 4

adjective (2)

: constituting or serving as a base

This situation is frequently encountered by seaplane pilots in northern Canada who must fly over lakes and tundra to a base camp located on a river.

Alan Lopez

: of the simplest or most basic design or form : having the form of something before upgrades or customization

This GTO's 350-hp, 5.7-liter V8 is the same that's used in the base Corvette, and it produces the power and throaty exhaust sound of a classic muscle car.

Consumer Reports

Phrases

cover all the bases or less commonly cover every base or have (all) one's bases covered

: to do or include everything that needs to be done or included : to fulfill all requirements or necessities

The well rounded menu covers all the bases—pork or duck breast and always a grilled chicken with complementary sauces and relishes …

Caroline Bates

In other words, we need to cover every base. Too often, something is remembered at the last minute and we find ourselves waiting for the stores to open on sale day so we can purchase a much-needed item.

Sue Story

In your e-mail, let the company know that, for their convenience, you're e-mailing the resume and letter, but that the original documents will arrive by postal service. This way you've got all your bases covered.

Peter Post

off base

: wrong, mistaken

Estimates were way off base.

: unawares

caught off base by the charges

touch all the bases or less commonly touch every base

: to mention every subject that needs to be considered

a speech that touches all the bases

: to do or include everything that needs to be done or included : to fulfill all requirements or necessities

need to touch all the bases when applying for a mortgage

The owner of the Utah Stars is in Salt Lake City, working 24 hours a day in an effort to touch every base to keep his club in Utah's capital city.

Dan Pattison

Example Sentences

Noun their base obedience to every unprincipled action ordered by their leader the army's base of attack was kept top secret until the battle began Verb They are going to base their new company in Seattle. The company has based itself in London. Our tour group based itself in a hotel in the heart of the city. Adjective (1) Iron is a base metal. a base and sneaky act that is a clear violation of international law See More

Recent Examples on the Web

Noun

The Defense Department is moving ahead with a Donald Trump-era project, building a third courtroom at Guantanamo Bay at a cost of $4 million, even though no additional trials are expected at the naval base.

Jess Bravin, WSJ, 17 Sep. 2022 Giménez hustled down the line to reach base on Gordon’s miscue and went to third on pinch-hitter Miller’s single to right.

Joe Noga, cleveland, 16 Sep. 2022 And while Austin Hays and Jorge Mateo reached base in the eighth, Baltimore didn’t capitalize. Henderson found a way to momentarily quell the noise inside Rogers Centre with two outs in the ninth inning, hitting a solo homer of his own.

Andy Kostka, Baltimore Sun, 16 Sep. 2022 The new Sentosa is likely to be Palau Brani, a trapezoidal land mass and former Navy base between Singapore and Sentosa.

Lilit Marcus, CNN, 16 Sep. 2022 As for the white, French signature detail, her manicurist made sure to deeply follow the edge of her nail shape down to her fingertips, framing that V-shaped base.

Chelsea Avila, Allure, 16 Sep. 2022 The base, officials noted, has previously housed and cared for displaced individuals, including Louisiana residents affected by Hurricane Katrina in 2005.

Samantha J. Gross, BostonGlobe.com, 16 Sep. 2022 Three straight Pittsburgh Pirates hitters reached base in those six pitches through two singles and a three-run homer.

The Enquirer, 13 Sep. 2022 The first three batters of the game reached base against Young before Hunter Renfroe's grounder was booted by third baseman Evan Longoria, leading to two runs.

Jr Radcliffe, Journal Sentinel, 8 Sep. 2022

Verb

Jonker instructed the jury to base its decision only on facts involving Fox and Croft.

Tresa Baldas, Detroit Free Press, 19 Aug. 2022 Deep-lake basing is an interesting idea, partially recycled from a Cold War plot to base missiles in the Great Lakes.

Kyle Mizokami, Popular Mechanics, 15 July 2022 Muzikir’s public defender encouraged the judge to base his ruling on Muzikir’s nearly spotless prison record.

Keith L. Alexander, Washington Post, 19 June 2022 There’s a reason that Varsho didn’t have anyone to base his transition off.

Theo Mackie, The Arizona Republic, 29 May 2022 Pairing with training partners who know how to base well, or raise her up, is also paramount.

Matt Wake | Mwake@al.com, al, 5 May 2022 To help narrow down the options, here are seven tips to base your selection of a competent vendor for software consulting services.

Thanh Pham, Forbes, 15 Mar. 2022 In addition to base Xbox One hardware exceeding WoW's minimum specs, Microsoft has had full keyboard-and-mouse support enabled for Xbox consoles for years, making the ecosystem a not-so-terrible fit for the popular MMO.

Sam Machkovech, Ars Technica, 19 Jan. 2022 Weeks after our arrival the previous year, Soviet attempts to base nuclear-capable missiles in Cuba had brought the world too close to nuclear war.

Peter Bridges, The Christian Science Monitor, 10 Jan. 2022

Adjective

Flores leads the Giants in games, runs, doubles, RBIs, hits and extra-base hits and is second in homers.

John Shea John Shea, San Francisco Chronicle, 4 Sep. 2022 Friedl, known for his speed and defense, is 13-for-30 with six extra-base hits since rejoining the Reds a couple of weeks ago.

The Enquirer, 28 Aug. 2022 José Ramírez led Cleveland’s offense Saturday by collecting his 16th game with multiple extra-base hits.

Joe Noga, cleveland, 28 Aug. 2022 The starting price is a very reasonable $41,769, but only fleet customers can spec the larger battery pack on the base trim level, so the you-and-me price for a big-battery truck leaps to $74,269.

Dave Vanderwerp, Car and Driver, 1 July 2022 Officials, residents, scientists, and companies all contributed to the Mumbai Climate Action Plan, which aims to cut emissions by 30% by 2030 and 44% by 2040, from a base level of 23.42 million metric tons of carbon dioxide in 2019.

Erika Page, The Christian Science Monitor, 2 May 2022 Fraud charges such as Ms. Holmes’s begin with a base offense level of seven.

Christopher Weaver, WSJ, 5 Jan. 2022 All tequilas offer a base level of roasty vegetal notes, but blancos give a bright, sparkly sheen to cocktails, whereas reposados and anjeos add a layer of warmth and spice.

John Debary, Bon Appétit, 4 June 2021 PMIs are diffusion indexes measuring month over month activity with a base level of 50.

Brendan Ahern, Forbes, 1 Mar. 2021 See More

Word History

Etymology

Noun

Middle English, from Anglo-French, from Latin basis, from Greek, step, base, from bainein to go — more at come

Verb

verbal derivative of base entry 1

Adjective (1)

Middle English bas, from Anglo-French, from Late Latin bassus fat, short, low

First Known Use

Noun

14th century, in the meaning defined at sense 1c(1)

Verb

1587, in the meaning defined at sense 2

Adjective (1)

14th century, in the meaning defined at sense 4

Adjective (2)

1734, in the meaning defined at sense 1

Kids Definition

base 1 of 3

noun

ˈbās

: a thing or a part on which something rests : bottom, foundation

the base of a statue

the base of the mountain

: a starting place or goal in various games

: any of the four stations a runner in baseball must touch in order to score

: the main place or starting place of an action or operation

The company's base is in New York.

: a place where a military force keeps its supplies or from which it starts its operations

an air force base

: a line or surface of a geometric figure upon which an altitude is or is thought to be constructed

base of a triangle

: the main substance in a mixture

: a number with reference to which a system of numbers is constructed

: a chemical substance (as lime or ammonia) that reacts with an acid to form a salt and turns red litmus paper blue

base

2 of 3

verb

based; basing

: to use as a main place of operation or action The company is based in Ohio.

base

3 of 3

adjective

baser; basest

: of low value and not very good in some ways

base metals

: not honorable

"I'll appeal to his baser instincts, of which he has plenty."

E. B. White, Charlotte's Web

Medical Definition

base

noun

ˈbās

plural bases ˈbā-səz How to pronounce base (audio)

: that portion of a bodily organ or part by which it is attached to another more central structure of the organism

the base of the thumb

: the usually inactive ingredient of a preparation serving as the vehicle for the active medicinal preparation

the fatty base of an ointment

: the chief active ingredient of a preparation

called also basis

: any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or are substances able to give up an unshared pair of electrons to an acid compare alkali

: any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracil

: freebase

单词	basing
释义	base 1 of 4 noun ˈbās plural bases ˈbā-səz 1 a : the bottom of something considered as its support : foundation the base of the mountain the lamp's heavy base b biology : that part of a bodily organ by which it is attached to another more central structure of the organism the base of the thumb c architecture (1) : the lower part of a wall, pier, or column considered as a separate architectural feature (2) : the lower part of a complete architectural design (as of a monument) d mathematics (1) : a side or face (see face entry 1 sense 5a(5)) of a geometrical figure from which an altitude (see altitude sense 1c(1)) can be constructed especially : a side or face on which the figure stands the base of a triangle (2) : the length of a base determining the triangle's base 2 a : a main ingredient paint having a latex base b : a supporting or carrying ingredient (as of a medicine) c : a first or bottom layer of something on which other elements are added Overnight, Utah's famous snow has freshly blanketed both runs, adding to a solid base of three feet … Abby Carroll 3 a : the fundamental part of something : groundwork, basis the book's theoretical base her broad base of knowledge b : something (as a group of people) that reliably provides support (such as for a business or political candidate) —usually singular efforts to expand their customer basethe band's fan baseBut I do believe that that's a very sore point with many Democrats and could be used to energize their base. John McCain c Marxism : the economic factors on which all legal, social, and political relations are formed 4 a : the starting point or line for an action or undertaking plans to make this city his base of operation J. A. Loftus b : a baseline in surveying c : a center or area of operations The company has its base in London. : such as (1) : a permanent military installation a naval base The troops were ordered back to base. (2) : the place from which a military force draws supplies (3) : a place where military operations begin d linguistics : root sense 6 "Leave" is the base of the verb "left." e mathematics (1) : a number (such as 5 in 5^6.44 or 5⁷) that is raised to a power (see power entry 1 sense 5a) especially : the number that when raised to a power equal to the logarithm of a number yields the number itself The logarithm of 100 to the base 10 is 2 since 10² = 100. (2) : a number equal to the number of units in a given digit's place (see place entry 1 sense 8) that for a given system of writing numbers is required to give the numeral 1 in the next higher place The decimal system uses a base of 10. also : such a system of writing numbers using an indicated base Convert from base 10 to base 2. (3) : a number that is multiplied by a rate or of which a percentage or fraction is calculated To find the interest on $90 at 10 percent multiply the base 90 by .10. 5 a : any one of the four stations at the corners of a baseball or softball infield allowing the batter to reach base b in various games : the starting place or goal c : a point to be considered His opening remarks touched every base. 6 chemistry a : any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or able to give up an unshared pair of electrons to an acid b : any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracil 7 finance : a price level at which a security (see security sense 3) previously declining in price resists further decline 8 heraldry : the lower part of a heraldic field (see field entry 1 sense 3c) 9 linguistics : the part of a transformational grammar that consists of rules and a lexicon and generates the deep structures of a language 10 : an electrode that modulates the current flowing through a bipolar junction transistor according to the voltage applied to the electrode This gate, which is called a grid in a tube and a base in a transistor, enables a small "controlling" voltage to turn on and off a much larger voltage between the cathode and the anode. Thom Hartmann compare gate entry 1 sense 5b baseless ˈbā-sləs adjective Illustration of base 1 upper torus 2 scotia 3 lower torus 4 plinth 5 shaft 6 fillets base 2 of 4 verb based; basing transitive verb 1 : to find a foundation or basis for : to find a base (see base entry 1 sense 3a) for —usually used with on or upon base an opinion on faulty informationa story based upon real-life events 2 : to make, form, or serve as a base for … great roots based the tree columns … George Macdonald the company is based in London clients who are based out of their homes base 3 of 4 adjective (1) 1 a : lacking or indicating the lack of higher qualities of mind or spirit : ignoble seemed a base betrayal of idealism L. M. Sears appealing to a person's baser instincts b : lacking higher values : degrading a drab base way of life 2 a : being of comparatively low value and having relatively inferior properties (such as lack of resistance to corrosion) a base metal such as iron compare noble entry 1 b : containing a larger than usual proportion of base metals base silver denarii 3 feudalism a : resembling a villein : servile a base tenant b : held by villenage base tenure 4 archaic : of little height … the cedar stoops not to the base shrub's foot … Shakespeare 5 archaic : baseborn … base in kind and born to be a slave. William Cowper 6 obsolete : low in place or position … fall to the base earth from the firmament! Shakespeare 7 obsolete : bass basely adverb baseness noun base 4 of 4 adjective (2) 1 : constituting or serving as a base This situation is frequently encountered by seaplane pilots in northern Canada who must fly over lakes and tundra to a base camp located on a river. Alan Lopez 2 : of the simplest or most basic design or form : having the form of something before upgrades or customization This GTO's 350-hp, 5.7-liter V8 is the same that's used in the base Corvette, and it produces the power and throaty exhaust sound of a classic muscle car. Consumer Reports Phrases cover all the bases or less commonly cover every base or have (all) one's bases covered : to do or include everything that needs to be done or included : to fulfill all requirements or necessities The well rounded menu covers all the bases—pork or duck breast and always a grilled chicken with complementary sauces and relishes … Caroline Bates In other words, we need to cover every base. Too often, something is remembered at the last minute and we find ourselves waiting for the stores to open on sale day so we can purchase a much-needed item. Sue Story In your e-mail, let the company know that, for their convenience, you're e-mailing the resume and letter, but that the original documents will arrive by postal service. This way you've got all your bases covered. Peter Post off base 1 : wrong, mistaken Estimates were way off base. 2 : unawares caught off base by the charges touch all the bases or less commonly touch every base 1 : to mention every subject that needs to be considered a speech that touches all the bases 2 : to do or include everything that needs to be done or included : to fulfill all requirements or necessities need to touch all the bases when applying for a mortgage The owner of the Utah Stars is in Salt Lake City, working 24 hours a day in an effort to touch every base to keep his club in Utah's capital city. Dan Pattison Synonyms Noun basis bedrock bottom cornerstone footing foundation ground groundwork keystone root underpinning warp warp and woof Verb ground hang predicate rest Adjective (1) contemptible currish despicable detestable dirty dishonorable execrable ignoble ignominious low low-down low-minded mean nasty paltry snide sordid vile wretched See all Synonyms & Antonyms Example Sentences Noun their base obedience to every unprincipled action ordered by their leader the army's base of attack was kept top secret until the battle began Verb They are going to base their new company in Seattle. The company has based itself in London. Our tour group based itself in a hotel in the heart of the city. Adjective (1) Iron is a base metal. a base and sneaky act that is a clear violation of international law See More Recent Examples on the Web Noun The Defense Department is moving ahead with a Donald Trump-era project, building a third courtroom at Guantanamo Bay at a cost of $4 million, even though no additional trials are expected at the naval base. Jess Bravin, WSJ, 17 Sep. 2022 Giménez hustled down the line to reach base on Gordon’s miscue and went to third on pinch-hitter Miller’s single to right. Joe Noga, cleveland, 16 Sep. 2022 And while Austin Hays and Jorge Mateo reached base in the eighth, Baltimore didn’t capitalize. Henderson found a way to momentarily quell the noise inside Rogers Centre with two outs in the ninth inning, hitting a solo homer of his own. Andy Kostka, Baltimore Sun, 16 Sep. 2022 The new Sentosa is likely to be Palau Brani, a trapezoidal land mass and former Navy base between Singapore and Sentosa. Lilit Marcus, CNN, 16 Sep. 2022 As for the white, French signature detail, her manicurist made sure to deeply follow the edge of her nail shape down to her fingertips, framing that V-shaped base. Chelsea Avila, Allure, 16 Sep. 2022 The base, officials noted, has previously housed and cared for displaced individuals, including Louisiana residents affected by Hurricane Katrina in 2005. Samantha J. Gross, BostonGlobe.com, 16 Sep. 2022 Three straight Pittsburgh Pirates hitters reached base in those six pitches through two singles and a three-run homer. The Enquirer, 13 Sep. 2022 The first three batters of the game reached base against Young before Hunter Renfroe's grounder was booted by third baseman Evan Longoria, leading to two runs. Jr Radcliffe, Journal Sentinel, 8 Sep. 2022 Verb Jonker instructed the jury to base its decision only on facts involving Fox and Croft. Tresa Baldas, Detroit Free Press, 19 Aug. 2022 Deep-lake basing is an interesting idea, partially recycled from a Cold War plot to base missiles in the Great Lakes. Kyle Mizokami, Popular Mechanics, 15 July 2022 Muzikir’s public defender encouraged the judge to base his ruling on Muzikir’s nearly spotless prison record. Keith L. Alexander, Washington Post, 19 June 2022 There’s a reason that Varsho didn’t have anyone to base his transition off. Theo Mackie, The Arizona Republic, 29 May 2022 Pairing with training partners who know how to base well, or raise her up, is also paramount. Matt Wake \| Mwake@al.com, al, 5 May 2022 To help narrow down the options, here are seven tips to base your selection of a competent vendor for software consulting services. Thanh Pham, Forbes, 15 Mar. 2022 In addition to base Xbox One hardware exceeding WoW's minimum specs, Microsoft has had full keyboard-and-mouse support enabled for Xbox consoles for years, making the ecosystem a not-so-terrible fit for the popular MMO. Sam Machkovech, Ars Technica, 19 Jan. 2022 Weeks after our arrival the previous year, Soviet attempts to base nuclear-capable missiles in Cuba had brought the world too close to nuclear war. Peter Bridges, The Christian Science Monitor, 10 Jan. 2022 Adjective Flores leads the Giants in games, runs, doubles, RBIs, hits and extra-base hits and is second in homers. John Shea John Shea, San Francisco Chronicle, 4 Sep. 2022 Friedl, known for his speed and defense, is 13-for-30 with six extra-base hits since rejoining the Reds a couple of weeks ago. The Enquirer, 28 Aug. 2022 José Ramírez led Cleveland’s offense Saturday by collecting his 16th game with multiple extra-base hits. Joe Noga, cleveland, 28 Aug. 2022 The starting price is a very reasonable $41,769, but only fleet customers can spec the larger battery pack on the base trim level, so the you-and-me price for a big-battery truck leaps to $74,269. Dave Vanderwerp, Car and Driver, 1 July 2022 Officials, residents, scientists, and companies all contributed to the Mumbai Climate Action Plan, which aims to cut emissions by 30% by 2030 and 44% by 2040, from a base level of 23.42 million metric tons of carbon dioxide in 2019. Erika Page, The Christian Science Monitor, 2 May 2022 Fraud charges such as Ms. Holmes’s begin with a base offense level of seven. Christopher Weaver, WSJ, 5 Jan. 2022 All tequilas offer a base level of roasty vegetal notes, but blancos give a bright, sparkly sheen to cocktails, whereas reposados and anjeos add a layer of warmth and spice. John Debary, Bon Appétit, 4 June 2021 PMIs are diffusion indexes measuring month over month activity with a base level of 50. Brendan Ahern, Forbes, 1 Mar. 2021 See More Word History Etymology Noun Middle English, from Anglo-French, from Latin basis, from Greek, step, base, from bainein to go — more at come Verb verbal derivative of base entry 1 Adjective (1) Middle English bas, from Anglo-French, from Late Latin bassus fat, short, low First Known Use Noun 14th century, in the meaning defined at sense 1c(1) Verb 1587, in the meaning defined at sense 2 Adjective (1) 14th century, in the meaning defined at sense 4 Adjective (2) 1734, in the meaning defined at sense 1 Phrases Containing base base exchange base angle base hit air base base price base runner base stealer base unit extra-base hit fan base loosely base on get to first base on-base percentage on base prisoner's base power base third base tax base home base base pay base pair base on balls base of operations base path first base second base customer base zero-base cover every base off base touch every base touch base See More base exchange base angle base hit air base base price base runner base stealer base unit extra-base hit fan base loosely base on get to first base on-base percentage on base prisoner's base power base third base tax base home base base pay base pair base on balls base of operations base path first base second base customer base zero-base cover every base off base touch every base touch base See More Kids Definition base 1 of 3 noun ˈbās 1 : a thing or a part on which something rests : bottom, foundation the base of a statue the base of the mountain 2 : a starting place or goal in various games 3 : any of the four stations a runner in baseball must touch in order to score 4 : the main place or starting place of an action or operation The company's base is in New York. 5 : a place where a military force keeps its supplies or from which it starts its operations an air force base 6 : a line or surface of a geometric figure upon which an altitude is or is thought to be constructed base of a triangle 7 : the main substance in a mixture 8 : a number with reference to which a system of numbers is constructed 9 : a chemical substance (as lime or ammonia) that reacts with an acid to form a salt and turns red litmus paper blue base 2 of 3 verb based; basing : to use as a main place of operation or action The company is based in Ohio. base 3 of 3 adjective baser; basest 1 : of low value and not very good in some ways base metals 2 : not honorable "I'll appeal to his baser instincts, of which he has plenty." E. B. White, Charlotte's Web Medical Definition base noun ˈbās plural bases ˈbā-səz 1 : that portion of a bodily organ or part by which it is attached to another more central structure of the organism the base of the thumb 2 a : the usually inactive ingredient of a preparation serving as the vehicle for the active medicinal preparation the fatty base of an ointment b : the chief active ingredient of a preparation called also basis 3 a : any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or are substances able to give up an unshared pair of electrons to an acid compare alkali b : any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracil 4 : freebase basing verb present participle of base as in predicating to find a basis she based her argument on careful research Synonyms & Similar Words Relevance predicating grounding resting establishing hanging presuming founding premising postulating presupposing assuming supposing
随便看	ferry ferry bridge ferry car ferry push car ferry-flat ferry-house ferry-place ferryage ferryboat ferryboats ferrying ferryman ferrymen ferryville fers fers-de-moline fers-de-moulin fersmanite fersmannite fersmite Fert fertile Fertile Crescent fertile frond fertile soil

base

noun

Illustration of base

verb

adjective (1)

adjective (2)

Synonyms

Example Sentences

Word History

Phrases Containing base

Kids Definition

noun

verb

adjective

Medical Definition

noun

verb