at

at
I. preposition Etymology: Middle English, from Old English æt; akin to Old High German az at, Latin ad Date: before 12th century 1.used as a function word to indicate presence or occurrence in, on, or near <
staying at a hotel
>
<
at a party
>
<
sick at heart
>
2.used as a function word to indicate the goal of an indicated or implied action or motion <
aim at the target
>
<
creditors are at him again
>
3.used as a function word to indicate that with which one is occupied or employed <
at work
>
<
at the controls
>
<
good at chess
>
4.used as a function word to indicate situation in an active or passive state or condition <
at liberty
>
<
at rest
>
5.used as a function word to indicate the means, cause, or manner <
sold at auction
>
<
laughed at my joke
>
<
act at your own discretion
>
6. a.used as a function word to indicate the rate, degree, or position in a scale or series <
the temperature at 90
>
<
at first
>
b.used as a function word to indicate age or position in time <
will retire at 65
>
II. noun also att (plural at; also att) Etymology: Lao Date: 1955see kip at money table III. abbreviation 1. airtight 2. atmosphere 3. atomic

New Collegiate Dictionary. 2001.

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