| 释义 |
base
base mod. rude; gross. (California.) You are so, like, base! See:- base
- base (one's) opinion on
- base (up)on
- base in
- base instinct
- base motive
- base on
- base on balls
- base opinion on
- base over apex
- be off base
- get to first base
- get to first base with (someone)
- get to first base with someone
- get to first base, to
- install(ed) base
- install(ed) user base
- off base
- reach first base
- steal a base
- touch base
- touch base (with someone)
- touch base with
- touch base with someone
- user base
- way off base
See base
base
base: see acids and basesacids and bases,
two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Properties
..... Click the link for more information. .BaseThe lowest and most visible part of a building, often treated with distinctive materials, such as rustication; also pertains to the lowest part of a column or pier that rests on a pedestal, plinth or stylobate.  Base in electrical and radio engineering, a component of an electron or ion device, such as an incandescent lamp, a fluorescent lamp, or an electron tube. The base is used to install the device in, for example, a socket and to provide the connection between the elements within the device, such as the filaments or the electrodes, and the external electric circuit. base[bās] (chemistry) Any chemical species, ionic or molecular, capable of accepting or receiving a proton (hydrogen ion) from another substance; the other substance acts as an acid in giving of the proton. Also known as Brønsted base. (chemical engineering) The primary substance in solution in crude oil, and remaining after distillation. (computer science) root (electronics) The region that lies between an emitter and a collector of a transistor and into which minority carriers are injected. The part of an electron tube that has the pins, leads, or other terminals to which external connections are made either directly or through a socket. The plastic, ceramic, or other insulating board that supports a printed wiring pattern. (engineering) Foundation or part upon which an object or instrument rests. (genetics) nitrogenous base (graphic arts) A transparent plastic film on which a photographic emulsion is applied. (lapidary) pavilion (mathematics) A side or face upon which the altitude of a geometric configuration is thought of as being constructed. For a logarithm, the number of which the logarithm is the exponent. For a number system, the number whose powers determine place value. For a topological space, a collection of sets, unions of which form all the open sets of the space. (ordnance) Station or installation from which military forces operate and from which supplies are obtained. base  bases, 3 1. The lowest (and often widest) visible part of a building, often distinctively treated. A base is distinguished from a foundation or footing in being visible rather than buried. 2. A low, thickened section of a wall; a wall base. Also see socle. 3. Lower part of a column or pier, wider than the shaft, and resting on a plinth, pedestal, podium, or stylobate. Also see Asiatic base, Attic base. 4. A baseboard; skirting. 5. A preparation for a finished surface, as for flooring, stucco, paint, etc.; a surface to which the base coat of plaster is applied. Also see backing, ground. 6. In paint, either the medium or the main chemical ingredient. 7. In asphaltic or portland cement concrete paving, the prepared bottom course of crushed stone or gravel upon which subsequent courses are laid; serves to distribute localized wheel loads over a larger subbase and hence to improve load-bearing capacity. 8. The lowest point of any vertical pipe.base  i. A location where aircraft with all facilities are based. Refers to an air force base, naval air station, and fixed base operator.
ii. In air traffic control phraseology and when transmitted on the radio, it means turning onto the base leg of the circuit pattern. The base leg, as it is known, is flown at right angles to the runway, just before turning to the final direction for landing.
iii. In photogrammetry, the distance at the scale of the stereoscopic model between adjacent perspective centers as reconstructed in the plotting instrument. Also called an air base.
iv. In military radio telephony usage, it means the airfield from which the mission was launched, as in “return to base.”
v. The same as base course.base11. a chemical compound that combines with an acid to form a salt and water. A solution of a base in water turns litmus paper blue, produces hydroxyl ions, and has a pH greater than 7. Bases are metal oxides or hydroxides or amines 2. Biochem. any of the nitrogen-containing constituents of nucleic acids: adenine, thymine (in DNA), uracil (in RNA), guanine, or cytosine 3. the inorganic material on which the dye is absorbed in lake pigments; carrier 4. Biologya. the part of an organ nearest to its point of attachment b. the point of attachment of an organ or part 5. Architecta. the lowest division of a building or structure b. the lower part of a column or pier 6. the lower side or face of a geometric construction 7. Mathsa. the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value system b. (of a logarithm or exponential) the number whose powers are expressed c. (of a mathematical structure) a substructure from which the given system can be generated d. the initial instance from which a generalization is proven by mathematical induction 8. Logic Maths the initial element of a recursive definition, that defines the first element of the infinite sequence generated thereby 9. Electronics the region in a transistor between the emitter and collector 10. Photog the glass, paper, or cellulose-ester film that supports the sensitized emulsion with which it is coated 11. a starting or finishing point in any of various games 12. Baseball any of the four corners of the diamond, which runners have to reach in order to score
base21. English historya. (of land tenure) held by villein or other ignoble service b. holding land by villein or other ignoble service 2. Music an obsolete spelling of bassbase(1) A starting or reference point.
(2) In a bipolar transistor, the elements that act as a switch. In NMOS and PMOS transistors, which make up CMOS circuits, the base is called the "gate." See transistor.
(3) A multiplier in a numbering system. In a decimal system, each digit position is worth 10x the position to its right. In binary, each digit position is worth 2x the position to its right.
(4) (Base) The database program in an office suite. See OpenOffice and LibreOffice.base
base [bās] 1. the lowest part or foundation of anything. See also basis.2. the main ingredient of a compound.3. the nonacid part of a salt; a substance that combines with acids to form salts. In the chemical processes of the body, bases are essential to the maintenance of a normal acid-base balance. Excessive concentration of bases in the body fluids leads to alkalosis.4. a unit of a removable dental prosthesis.5. in genetics, a nucleotide, particularly one in a nucleic acid sequence.intermediary base the layer of cement between a dental restoration and the tooth structure, acting as an insulator and protective barrier.nitrogenous base an aromatic, nitrogen-containing molecule that serves as a proton acceptor, e.g., purine or pyrimidine.ointment base a vehicle for the medicinal substances carried in an ointment.purine b's a group of compounds of which purine is the base, including uric acid, adenine, xanthine, and theobromine.  Bases. A, Purine and some substituted purine bases occurring in nucleic acids. B, Pyrimidine and some substituted pyrimidine bases occurring in nucleic acids. From Dorland's, 2000.pyrimidine b's a group of chemical compounds of which pyrimidine is the base, including uracil, thymine, and cytosine, which are common constituents of nucleic acids.base (bās), [TA] 1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex (for example, heart); the foundation.
See also: Brønsted base, Lewis base. Synonym(s): basis [TA], basement (1) 2. pharmacy the chief ingredient of a mixture.
See also: Brønsted base, Lewis base. 3. chemistry an electropositive element (cation) that unites with an anion to form a salt; a compound ionizing to yield hydroxyl ion.
See also: Brønsted base, Lewis base. Synonym(s): alkali (2) 4. Nitrogen-containing organic compounds (for example, purines, pyrimidines, amines, alkaloids, and ptomaines) that act as Brønsted bases. 5. Cations, or substances forming cations. 6. A substance the pH of which is over 7.0, in contrast to an acid. [L. and G. basis] base (bās)n.1. Biology a. The part of a plant or animal organ that is nearest to its point of attachment.b. The point of attachment of such an organ.2. Chemistry a. Any of a class of compounds whose aqueous solutions are characterized by a bitter taste, a slippery feel, the ability to turn litmus blue, and the ability to react with acids to form salts.b. A substance that yields hydroxide ions when dissolved in water.c. A substance that can act as a proton acceptor.d. A substance that can donate a pair of electrons to form a covalent bond.3. One of the nitrogen-containing purines (adenine and guanine) or pyrimidines (cytosine, thymine, and uracil) that occurs attached to the sugar component of DNA or RNA.base The core of thing.
Anatomy
The bottom of a conical or pyramidal structure—basis TA, basement.
Chemistry
(1) An electropositive substance which combines with an acid to form a salt.
(2) A substance that dissociates to give H+ ions in aqueous solutions; chemical substance that ionises in water to release hydroxyl ions (OH-) or other ions that combine with hydrogen ions.
(3) A substance which can combine with a protons/H+ ions.
(4) Cation.
Drug slang
A regional street term for freebase cocaine; crack.
Molecular biology
A single nucleotide.
Pharmacology
The core active ingredient of a therapeutic agent.
Vox populi
The lowest part, bottom or fundamental part of structure.base (bās) [TA] 1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex; the foundation.
Synonym(s): basis [TA] . 2. pharmacy The chief ingredient of a mixture. 3. chemistry An electropositive element (cation) that unites with an anion to form a salt; a compound ionizing to yield hydroxyl ion.
Synonym(s): alkali (2) . 4. Nitrogen-containing organic compounds (e.g., purines, pyrimidines, amines, alkaloids, ptomaines) that act as Br̷ønsted bases. 5. A substance with a pH over 7.0, in contrast to an acid.
See also: Br̷ønsted base, Lewis base[L. and G. basis]base A chemical compound that combines with an acid to form a salt and water. A term applied in genetics to one of the four nitrogenous bases of DNA and RNA. In DNA the bases are adenine, thymine, guanine and cytosine. Guanine and adenine are purines and cytosine and thymine are pyrimidines. In RNA, the pyrimidine base uracil replaces thymine. (See also BASE PAIR).base - a chemical substance which has a tendency to accept protons (H+); the base dissolves in water with the production of hydroxyl ions and reacts with acids to form salts.
- one of the PURINE or PYRIMIDINE components of NUCLEOTIDES.
base (bās) [TA] 1. The lower part or bottom; the part of a pyramidal or conic structure opposite the apex (e.g., heart); the foundation.
Synonym(s): basement (1) . 2. pharmacy the chief ingredient of a mixture. 3. A substance with a pH over 7.0, in contrast to an acid. [L. and G. basis]Patient discussion about baseQ. i am diabetic :( what is the right diet for me? should i avoid sugar based products? what is the amount of sugar in the blood that consider to be normal ?A. You may find it all here:
www.nlm.nih.gov/medlineplus/diabeticdiet.html Q. where is the greatest data base of Fibromyalgia over the net? do someone know the address ? will i find all my answers there ? is it like here where you can chat with other patient ?A. i looked for information about Fibromyalgia all around the web and the best site gathering reliable information on it is:
http://www.nlm.nih.gov/medlineplus/fibromyalgia.html
gives you every web page about it and with a quality stamp :)
Q. Is good Nutrition is the base of a good and healthy life? A. good nutrition will not solve all your health problems in life, you can still have infections and other health problems but it will reduce the amount of it in dramatic way. More discussions about baseBase
Related to Base: Base camp, second baseBASE. Something low; inferior. This word is frequently used in composition; as base court, base estate, base fee, &c. Base
BaseA technical analysis tool. A chart pattern depicting the period when the supply and demand of a certain stock are in relative equilibrium, resulting in a narrow trading range. The merging of the support level and resistance level.BaseIn technical analysis, a situation in which the support level and the resistance level are roughly the same for a given (usually long) period of time. That is, a base occurs when a security trades only in a very narrow range. A base indicates that the supply and demand for a security are at an equilibrium. This means that the security is unlikely to be bullish or bearish in the near future.base
Related to base: Base camp, second baseSynonyms for basenoun the lowest or supporting part or structureSynonyms- basis
- bed
- bottom
- foot
- footing
- foundation
- fundament
- ground
- groundwork
- seat
- substratum
- underpinning
noun that on which something immaterial, such as an argument or a charge, restsSynonyms- basis
- footing
- foundation
- fundament
- ground
- groundwork
- underpinning
noun a fundamental principle or underlying conceptSynonyms- basis
- cornerstone
- foundation
- fundament
- fundamental
- root
- rudiment
noun a center of organization, supply, or activitySynonyms- complex
- headquarters
- station
- installation
noun the main part of a word to which affixes are attachedSynonymsverb to provide a basis forSynonyms- build
- establish
- found
- ground
- predicate
- rest
- root
- underpin
adj having or proceeding from low moral standardsSynonyms- ignoble
- low
- low-down
- mean
- sordid
- squalid
- vile
adj of decidedly inferior qualitySynonyms- cheap
- lousy
- miserable
- paltry
- poor
- rotten
- shoddy
- sleazy
- trashy
- cheesy
- crummy
- schlocky
adj lacking high station or birthSynonyms- baseborn
- common
- déclassé
- declassed
- humble
- ignoble
- lowly
- mean
- plebeian
- unwashed
- vulgar
|