[ at; unstressed uh t, it ]
/ æt; unstressed ət, ɪt /
(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.
(used to indicate a location or position, as in time, on a scale, or in order): at zero; at noon; at age 65; at the end; at the lowest point.
(used to indicate presence or location): at home; at hand.
(used to indicate amount, degree, or rate): at great speed; at high altitudes.
(used to indicate a direction, goal, or objective); toward: Aim at the mark. Look at that.
(used to indicate occupation or involvement): at work; at play.
(used to indicate a state or condition): at ease; at peace.
(used to indicate a cause or source): She was annoyed at his stupidity.
(used to indicate a method or manner): He spoke at length.
(used to indicate relative quality or value): at one's best; at cost.
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 at1
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, Greek a- (< a pre-Hellenic IE substratum language), Oscan, Old Irish, Gaulish, Phrygian ad-
Definition for at (2 of 9)
[ aht, at ]
/ ɑt, æt /
a money of account of Laos, the 100th part of a kip.
Origin of at2
1950–55; < Lao; compare Thai ʔàt formerly, a copper coin worth one eighth of a füang, ultimately < Pali aṭṭha eight
Definition for at (3 of 9)
Definition for at (4 of 9)
Definition for at (5 of 9)
Definition for at (6 of 9)
Definition for at (7 of 9)
variant of ad- before t: attend.
Definition for at (8 of 9)
Definition for at (9 of 9)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for at (1 of 6)
/ (æt) /
used to indicate location or positionare they at the table?; staying at a small hotel
towards; in the direction oflooking at television; throwing stones at windows
used to indicate position in timecome at three o'clock
engaged in; in a state of (being)children at play; stand at ease; he is at his most charming today
(in expressions concerned with habitual activity) during the passing of (esp in the phrase at night)he used to work at night
for; in exchange forit's selling at four pounds
used to indicate the object of an emotionangry at the driver; shocked at his behaviour
where it's at slang the real place of action
Word Origin for at
Old English æt; related to Old Norse at to, Latin ad to
British Dictionary definitions for at (2 of 6)
/ (ɑːt, æt) /
noun plural at
a Laotian monetary unit worth one hundredth of a kip
Word Origin for at
British Dictionary definitions for at (3 of 6)
the internet domain name for
British Dictionary definitions for at (4 of 6)
the chemical symbol for
Also: A ampere-turn
British Dictionary definitions for at (5 of 6)
British Dictionary definitions for at (6 of 6)
Also: atm atmosphere (unit of pressure)
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
Medicine definitions for at (1 of 2)
The symbol for the elementastatine
Medicine definitions for at (2 of 2)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for at (1 of 2)
The symbol for astatine.
Science definitions for at (2 of 2)
[ ăs′tə-tēn′ ]
A highly unstable, rare, radioactive element that is the heaviest of the halogen elements. Its most stable isotope has a half-life of 8.3 hours. Atomic number 85; melting point 302°C; boiling point 337°C; valence probably 1, 3, 5, 7. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.