| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024on /ɑn, ɔn/USA pronunciation prep. - so as to be or to remain supported by:Put the package on the table.
- so as to be attached to or unified with:There is a label on the jar.
- so as to be a covering or wrapping for:Put the blanket on the baby.
- in connection, association, or cooperation with:to serve on a jury.
- so as to be a supporting part or base of:legs on a chair.
- (used to show that the preceding noun has the following noun as its place, location, situation, etc.):an ugly scar on the face.
- very close to;
at the edge of:a house on the lake. - in the direction of:to sail on a southerly course.
- using as a means of carrying or of supporting or providing movement:arrived on the noon plane.
- by the agency or means of:drunk on wine.
- directed against or toward:She played a joke on him.
- having as a subject;
being about (something):a new book on dogs. - in a state, condition, or process of:The workers are on strike.
- engaged in or involved with:I'm on the second chapter of the book.
- subject to:If there is a doctor on call it means that a doctor can be summoned quickly in an emergency.
- having as a source or agent:He came to depend on his friends.
- having as a basis or ground:on my word of honor.
- assigned to or working at:Who's on duty today?
- (used with days and dates) at the time mentioned:The train arrives every hour on the hour (= at one, two, three o'clock, etc.)
- at the time or occasion of:You have to pay cash on delivery (= at the time delivery is made).
- within the required limits of:The train arrived on time.
- having as the object or end of motion:The demonstrators marched on the capital.
- having as the object or the goal of action, thought, desire, etc.:to gaze on a scene.
- having as the subject or reference;
with respect to:What are your views on rock music? - Informal Termspaid for by, esp. as a treat or gift:Dinner is on me.
- taking or using as a measure or cure to improve one's health, energy, etc.:He's on a low-salt diet.
- regularly taking or addicted to:She's not on drugs anymore.
- Informal Termswith;
carried by:I have no money on me. - so as to disturb or affect in a bad way:My hair dryer broke on me.
- having as a risk or unfortunate result:on pain of death.
- in addition to:millions on millions of stars.
adv. - in, into, or onto a position of being supported or attached:Sew the buttons on.
- in, into, or onto a position of covering or wrapping:Put your raincoat on.
- tightly attached to a thing, such as for support:Hold on!
- toward a place, point, activity, or object:to look on while others work.
- forward, onward, or along, such as in any course or process later on:further on.
- with continuous activity:continued on with his job.
- into or in active operation or performance:Turn the gas on.
adj. [be + ~] - operating or in use:Is the radio on?
- taking place;
occurring:Don't you know there's a war on? - being broadcast:What's on tonight, anything interesting to watch?
- scheduled or planned:Do you have anything on for tomorrow?
- Informal Terms
- behaving in a very animated or theatrical manner:He never stops and just relaxes; he's always on.
- functioning or performing at one's best:The pitcher is really on today.
Idioms- Idioms on and off, with periods of time in between;
intermittently. - Idioms on and on, at great length:to chatter on and on.Compareat, in.
WordReference Random House Unabridged Dictionary of American English © 2024on (on, ôn),USA pronunciation prep. - so as to be or remain supported by or suspended from:Put your package down on the table; Hang your coat on the hook.
- so as to be attached to or unified with:Hang the picture on the wall. Paste the label on the package.
- so as to be a covering or wrapping for:Put the blanket on the baby. Put aluminum foil on the lamb chops before freezing them.
- in connection, association, or cooperation with;
as a part or element of:to serve on a jury. - so as to be a supporting part, base, backing, etc., of:a painting on canvas;mounted on cardboard;legs on a chair.
- (used to indicate place, location, situation, etc.):a scar on the face;the book on the table;a house on 19th Street.
- (used to indicate immediate proximity):a house on the lake; to border on absurdity.
- in the direction of:on the left; to sail on a southerly course.
- (used to indicate a means of conveyance or a means of supporting or supplying movement):on the wing; This car runs on electricity. Can you walk on your hands? I'll be there on the noon plane.
- by the agency or means of:drunk on wine;talking on the phone;I saw it on television.
- in addition to:millions on millions of stars.
- with respect or regard to (used to indicate the object of an action directed against or toward):Let's play a joke on him. Write a critical essay on Shakespeare.
- in a state or condition of;
in the process of:on strike; The house is on fire! - subject to:a doctor on call.
- engaged in or involved with:He's on the second chapter now.
- (used to indicate a source or a person or thing that serves as a source or agent):a duty on imported goods; She depends on her friends for encouragement.
- (used to indicate a basis or ground):on my word of honor; The movie is based on the book.
- (used to indicate risk or liability):on pain of death.
- (used to indicate progress toward or completion of an objective):We completed the project on budget.
- assigned to or occupied with;
operating:Who's on the switchboard this afternoon? - [Informal.]so as to disturb or affect adversely:My hair dryer broke on me.
- Informal Termspaid for by, esp. as a treat or gift:Dinner is on me.
- taking or using as a prescribed measure, cure, or the like:The doctor had her on a low-salt diet.
- regularly taking or addicted to:He was on drugs for two years.
- Informal Termswith;
carried by:I have no money on me. - (used to indicate time or occasion):on Sunday; We demand cash on delivery.
- (used to indicate the object or end of motion):to march on the capital.
- (used to indicate the object or end of action, thought, desire, etc.):to gaze on a scene.
- (used to indicate subject, reference, or respect):views on public matters.
- (used to indicate an encounter):The pickpocket crept up on a victim.
- on the bow, [Naut.]bow3 (def. 7).
adv. - in, into, or onto a position of being supported or attached:Sew the buttons on.
- in, into, or onto a position of covering or wrapping:Put your raincoat on.
- fast to a thing, as for support:Hold on!
- toward a place, point, activity, or object:to look on while others work.
- forward, onward, or along, as in any course or process:further on.
- with continuous activity:to work on.
- into or in active operation or performance:Turn the gas on.
- Idioms on and off, off (def. 22a).
- Idioms on and on, at great length, so as to become tiresome:They rambled on and on about their grandchildren.
adj. - operating or in use:The television set was on. Is your brake on?
- taking place;
occurring:Don't you know there's a war on? - performing or broadcasting:The radio announcer told us we were on.
- Informal Terms
- behaving in a theatrical, lively, or ingratiating way:Around close friends, one doesn't have to be on every minute.
- functioning or performing at one's best:When she's on, no other tennis player is half as good.
- scheduled or planned:Anything on after supper?
- Sport[Baseball.]positioned on a base or bases:They had two men on when he hit the home run.
- Sport[Cricket.]noting that side of the wicket, or of the field, on which the batsman stands.
- Idioms on to, aware of the true nature, motive, or meaning of:I'm on to your little game.
n. - Sport[Cricket.]the on side.
- bef. 900; Middle English on, an, Old English: on, in, to; cognate with Dutch aan, German an, Old Norse ā, Gothic ana; akin to Greek aná up, upon (see ana-)
- Bible, Place NamesBiblical name of Heliopolis.
ON, - Language VarietiesOld Norse.
Also, ON., O.N. - AbbreviationsOntario, Canada (approved for postal use).
-on1 , - Physicsa suffix used in the names of subatomic particles (gluon;
meson;
neutron), quanta (graviton), and other minimal entities or components (cistron;
codon;
magneton;
photon).
- compare proton probably extracted from ion
, - Chemistrya suffix used in the naming of inert gaseous elements:neon.
- Greek -on, neuter of -os adjective, adjectival ending
Collins Concise English Dictionary © HarperCollins Publishers:: on /ɒn/ prep - in contact or connection with the surface of; at the upper surface of: an apple on the ground, a mark on the table cloth
- attached to: a puppet on a string
- carried with: I've no money on me
- in the immediate vicinity of; close to or along the side of: a house on the sea, this verges on the ridiculous!
- within the time limits of a day or date: he arrived on Thursday
- being performed upon or relayed through the medium of: what's on the television?
- at the occasion of: on his retirement
- used to indicate support, subsistence, contingency, etc: he lives on bread, it depends on what you want
- regularly taking (a drug): she's on the pill
- addicted to: he's on heroin
- by means of (something considered as a mode of transport) (esp in such phrases as on foot, on wheels, on horseback, etc)
- in the process or course of: on a journey, on strike
- concerned with or relating to: a tax on potatoes, a programme on archaeology
- used to indicate the basis, grounds, or cause, as of a statement or action: I have it on good authority
- against: used to indicate opposition: they marched on the city at dawn
- used to indicate a meeting or encounter: he crept up on her
- (used with an adjective preceded by the) indicating the manner or way in which an action is carried out: on the sly, on the cheap
- informal staked or wagered as a bet: ten pounds on that horse
- charged to: the drinks are on me
adv (often used as a particle)- in the position or state required for the commencement or sustained continuation, as of a mechanical operation: the radio's been on all night
- attached to, surrounding, or placed in contact with something
- in a manner indicating continuity, persistence, concentration, etc: don't keep on about it, the play went on all afternoon
- in a direction towards something, esp forwards; so as to make progress: we drove on towards London, march on!
- on and off, off and on ⇒ intermittently; from time to time
- on and on ⇒ without ceasing; continually
adj - functioning; operating: turn the switch to the on position
- (postpositive) informal performing, as on stage: I'm on in five minutes
- definitely taking place: the match is on for Friday, their marriage is still on
- tolerable, practicable, acceptable, etc: your plan just isn't on
- on at ⇒ informal nagging: she was always on at her husband
- (of a bowler) bowling
n - (modifier) relating to or denoting the leg side of a cricket field or pitch: the on side, an on drive
- (in combination) used to designate certain fielding positions on the leg side: long-on, mid-on
Etymology: Old English an, on; related to Old Saxon an, Old High German, Gothic ana ON, + - AbbreviationsOntario, Canada (approved for postal use).
Collins Concise English Dictionary © HarperCollins Publishers:: ON abbreviation for - Old Norse
- (esp in postal addresses) Ontario
Collins Concise English Dictionary © HarperCollins Publishers:: On /ɒn/ n - the ancient Egyptian and biblical name for Heliopolis
Collins Concise English Dictionary © HarperCollins Publishers:: -on suffix forming nouns - indicating a chemical substance: interferon, parathion
- (in physics) indicating an elementary particle or quantum: electron, photon
- (in chemistry) indicating an inert gas: neon, radon
- (in biochemistry) a molecular unit: codon, operon
Etymology: from ion |