at

UK: strong: /ˈæt/, weak: /ət/

US: /æt; unstressed ət, ɪt/

US: (prep. at; unstressed ət, it; n. ät, at)

WordReference Random House Learner's Dictionary of American English © 2025

at¹ /æt; unstressed ət, ɪt/   prep. 

1. (used to indicate a point, place, or location, as an address):
   We met at the library.
2. (used to indicate a point of time):
   It happened at midnight.
3. (used to indicate a location or position on a scale, or in order):
   The temperature is at zero.
4. (used to indicate an occurrence or when something happens):
   At low tide the waves aren't dangerous.
5. (used to indicate amount, degree, or rate):
   went at great speed.
6. (used to indicate a direction, goal, or an attempt to do something or reach something):
   Look at that; aimed at the target.
7. (used to indicate occupation or involvement):
   watching the children at play.
8. (used to indicate a state or condition):
   at peace with the world.
9. (used to indicate how something is done or accomplished):
   They held me up at gunpoint.
10. (used to indicate a cause or source):
    amazed at his skill.
11. (used to indicate relative quality or value):
    I'll sell it to you at cost.

WordReference Random House Unabridged Dictionary of American English © 2025

at¹  (at; unstressed ət, it), prep. 

1. (used to indicate a point or place occupied in space);
   in, on, or near:
   to stand at the door; at the bottom of the barrel.
2. (used to indicate a location or position, as in time, on a scale, or in order):
   at zero;
   at age 65;
   at the end;
   at the lowest point.
3. (used to indicate presence or location):
   at home; at hand.
4. (used to indicate amount, degree, or rate):
   at great speed; at high altitudes.
5. (used to indicate a direction, goal, or objective);
   toward:
   Aim at the mark. Look at that.
6. (used to indicate occupation or involvement):
   at work; at play.
7. (used to indicate a state or condition):
   at ease; at peace.
8. (used to indicate a cause or source):
   She was annoyed at his stupidity.
9. (used to indicate a method or manner):
   He spoke at length.
10. (used to indicate relative quality or value):
    at one's best; at cost.
11. be at (someone), to be sexually aggressive toward (a person):
    She's pregnant again because he's at her morning, noon, and night.
12. where it's at, [Informal.] the place where the most interesting or exciting things happen:
    Emma says that Rome is definitely where it's at now.

• a pre-Hellenic Indo-European substratum language), Oscan, Old Irish, Gaulish, Phrygian ad-
• bef. 900; Middle English; Old English æt; cognate with Old Frisian et, Old Norse, Old Saxon, Gothic at, Old High German az, Latin, Old Welsh, Old Breton ad, Greek a- (

at²  (ät, at), n. 

1. Currency a money of account of Laos, the 100th part of a kip.

• Pali aṭṭha eight
• Lao; compare Thai ʔàt formerly, a copper coin worth one eighth of a füang, ultimately
• 1950–55

at-, 

1. var. of ad- before
   t: attend.

AT, 

1. achievement test.
2. Military antitank.

At, 

1. Chemistry, Electricity ampere-turn.

At, [Symbol, Chem.]

1. astatine.

at., 

1. Physics atmosphere.
2. Physics atomic.
3. Law attorney.

A.T., 

1. Time Atlantic time.

Collins Concise English Dictionary © HarperCollins Publishers::

at / æt/ preposition

1. used to indicate location or position: are they at the table?, staying at a small hotel
2. towards; in the direction of: looking at television, throwing stones at windows
3. used to indicate position in time: come at three o'clock
4. engaged in; in a state of (being): children at play, stand at ease, he is at his most charming today
5. (in expressions concerned with habitual activity) during the passing of (esp in the phrase at night): he used to work at night
6. for; in exchange for: it's selling at four pounds
7. used to indicate the object of an emotion: angry at the driver, shocked at his behaviour
8. where it's at ⇒ the real place of action

Etymology: Old English æt; related to Old Norse at to, Latin ad to

Collins Concise English Dictionary © HarperCollins Publishers::

AT abbreviation

1. attainment target

Collins Concise English Dictionary © HarperCollins Publishers::

At symbol:chemical

1. astatine

Collins Concise English Dictionary © HarperCollins Publishers::

at. abbreviation

1. Also: atm atmosphere (unit of pressure)
2. atomic