At Definition

ăt; ət when unstressed
preposition
In or near the area occupied by; in or near the location of.
At the market; at our destination.
American Heritage
On; in; near; by: at is the preposition of general (usually static) location, and is replaced by in, on, etc. when a more precise indication of location is needed.
At the office, at the edge of town.
Webster's New World
In or near the position of.
Always at my side; at the center of the page.
American Heritage
To or toward as the goal or object.
Look at her, swing at the ball, don't shout at me.
Webster's New World
To or toward the direction or location of, especially for a specific purpose.
Questions came at us from all sides.
American Heritage
Synonyms:
abbreviation
Attotesla.
American Heritage
Airtight.
Webster's New World
Air temperature.
American Heritage
Atmosphere.
Webster's New World
Ampere-turn.
American Heritage
noun
A monetary unit of Laos, equal to1100 of a kip.
Webster's New World
The @ symbol.
Wiktionary
Synonyms:
symbol
Astatine.
Webster's New World
affix
Webster's New World
pronoun

Contraction of that.

What’s ’at? (meaning What is that?)
Wiktionary

Other Word Forms of At

Noun

Singular:
at
Plural:
ats

Idioms, Phrasal Verbs Related to At

Origin of At

  • From Middle English at, from Old English æt (“at, near, by, toward”), from Proto-Germanic *at (“at, near, to”), from Proto-Indo-European *ád (“near, at”). Cognate with Scots at (“at”), North Frisian äät, äit, et, it (“at”), Danish at (“to”), Faroese at (“at, to, toward”), Norwegian åt (“to”), Swedish åt (“for, toward”), Icelandic (“to, towards”), Gothic (at, “at”), Latin ad (“to , near”).

    From Wiktionary

  • Middle English from Old English æt ad- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition