Dictionary.com

at

1
[ at; unstressed uht, it ]
/ æt; unstressed ət, ɪt /
Save This Word!

Definition of at

preposition
noun
@, a symbol that is used in email addresses to link a username to a domain name, used at the beginning of Twitter handles, and in other identifying designations on the internet.
verb (used with object) @ed or at-ed;@ing or at-ing.
(on social media)
  1. to tag an account that begins with the symbol @, resulting in a link to that account’s profile and a notification to the user that their account has been explicitly mentioned in someone else’s post: One big celebrity at-ed the restaurant, and suddenly reservations were booked for the next six weeks.
  2. to include or involve someone, or to call a person out, especially when that person does not want to be involved or singled out: My opinions are my own, so please don’t at my employer about the stuff I write on this site.
  3. to argue with someone, or dispute someone’s stated views, especially on social media: The sequel was better than the original—don’t at me!
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Idioms about at

    be at (someone), to be sexually aggressive toward (a person): She's pregnant again because he's at her morning, noon, and night.
    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.

Origin of at

1
First recorded before 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, Oscan ad-, Umbrian ař-, Old Irish, Gaulish, Phrygian ad-

Other definitions for at (2 of 9)

at2

or att

[ aht, at ]
/ ɑt, æt /

noun, plural at or ats.
a money of account of Laos, one 100th of a kip.

Origin of at

2
First recorded in 1950–55; from Lao; compare Thai ʔàt formerly, a copper coin worth one eighth of a füang, ultimately from Pali aṭṭha eight

Other definitions for at (3 of 9)

At1

abbreviation

Other definitions for at (4 of 9)

At2

Symbol, Chemistry.
astatine.

Other definitions for at (5 of 9)

AT

abbreviation
achievement test.

Other definitions for at (6 of 9)

aT

abbreviation
attotesla.

Other definitions for at (7 of 9)

at-

variant of ad- before t: attend.

Other definitions for at (8 of 9)

at.

abbreviation
atmosphere.
atomic.
attorney.

Other definitions for at (9 of 9)

A.T.

abbreviation
Atlantic time.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use at in a sentence

British Dictionary definitions for at (1 of 6)

at1
/ (æt) /

preposition

Word Origin for at

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

British Dictionary definitions for at (2 of 6)

at2
/ (ɑːt, æt) /

noun plural at
a Laotian monetary unit worth one hundredth of a kip

Word Origin for at

from Thai

British Dictionary definitions for at (3 of 6)

at3

the internet domain name for
Austria

British Dictionary definitions for at (4 of 6)

At

the chemical symbol for
astatine
symbol for
Also: A ampere-turn

British Dictionary definitions for at (5 of 6)

AT

abbreviation for
attainment target

British Dictionary definitions for at (6 of 6)

at.

abbreviation for
Also: atm atmosphere (unit of pressure)
atomic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for at

At

The symbol for astatine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK