at.

1. atmosphere.

2. atomic.

3. attorney.

* * *

at «at; unstressed uht, iht», preposition.

1. in; on; by; near: »

There is someone at the front door. She is at school.

2. in the direction of; to; toward: »

to aim at the mark. Look at me. The dog ran at the cat.

3. on or near the time of: »

at midnight. He goes to bed at nine o'clock.

4. in a place or condition of: »

at right angles. England and France were at war.

5. through; by way of: »

Smoke came out at the chimney.

6. doing; trying to do; engaged in: »

He is at work on a new project.

7. for: »

We bought two books at a dollar each.

8. because of; by reason of; with: »

The shipwrecked sailors were happy at the arrival of the rescuers. She is angry at you.

9. according to: »

She can wiggle her ears at will.

10. from: »

The prisoner got good treatment at the hands of his captors.

╂[Old English æt]

● ↑at one,

Usage At is used to show where or, sometimes, when. At, in are used to connect a word stating a place or a time to a sentence. At is used when the place or time is thought of as a point, such as on a map or a clock. In is used when the place or time is thought of as having boundaries and the idea to be expressed is that of being inside or within the boundaries: »

On our trip we stopped at Chicago and stayed two days in New York. We left at noon and drove in the afternoon.

See about for another usage note. (Cf. ↑about)

at-,

prefix. the form of ad- (Cf. ↑ad-) before t, as in attain.

at.,

1. airtight.

2. atmosphere.

3. atomic.

At (no period),

astatine (chemical element).

AT (no periods),

1. antitank.

2. appropriate technology.

3. Atlantic Time.

A.T.,

Atlantic Time.