am

[ am; unstressed uhm, m ]
/ æm; unstressed əm, m /

verb

1st person singular present indicative of be.

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Origin of am

First recorded before 900; Middle English; Old English am, eam, eom; cognate with Gothic im, Old Norse, Armenian em, Old Irish am (from unattested esmi ), Attic Greek eimí, Aeolic Greek émmi, Doric Greek ēmí (all from prehistoric Greek esmi ), Hittite esmi, early Lithuanian esmì, Old Church Slavonic yesmĭ, Albanian jam (from unattested esmi ), Sanskrit ásmi, from unattested Proto-Indo-European ésmi, from root es- “to be” + -m 1st person singular + -i, present-time marker; cf. is

Definition for am (2 of 7)

Am

Symbol, Chemistry.

americium.

Definition for am (3 of 7)

AM

abbreviation

Electronics.amplitude modulation: a method of impressing a signal on a radio carrier wave by varying its amplitude.
Radio. a system of broadcasting by means of amplitude modulation.
of, relating to, or utilizing such a system.Compare FM
Asian male.

Origin of AM

First recorded in 1935–40

Definition for am (4 of 7)

a.m.

before noon.
the period from midnight to noon, especially the period of daylight prior to noon: Shall we meet Saturday a.m.?
a morning newspaper, sometimes issued shortly before midnight.
Compare p.m.

Origin of a.m.

From Latin ante merīdiem

usage note for a.m.

The abbreviation a.m. for Latin ante merīdiem, meaning “before noon,” refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions combining a.m. with morning ( 6 a.m. in the morning ) and p.m. with afternoon, evening, or night ( 9 p.m. at night ) are redundant and occur most often in casual speech and writing. Both a.m. and p.m. sometimes appear in capital letters, especially in printed matter.

Definition for am (5 of 7)

A/m

ampere per meter.

Definition for am (6 of 7)

Am.

America.
American.

Definition for am (7 of 7)

A.M.

Master of Arts.

Origin of A.M.

(def. 2) from Latin Artium Magister
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for am (1 of 8)

am1

verb (æm, unstressed əm)

(used with I) a form of the present tense (indicative mood) of be 1

Word Origin for am

Old English eam; related to Old Norse em, Gothic im, Old High German bim, Latin sum, Greek eimi, Sanskrit asmi

British Dictionary definitions for am (2 of 8)

am2

abbreviation for

British Dictionary definitions for am (3 of 8)

am3

the internet domain name for

Armenia

British Dictionary definitions for am (4 of 8)

Am

the chemical symbol for

americium

British Dictionary definitions for am (5 of 8)

AM

abbreviation for

British Dictionary definitions for am (6 of 8)

a.m.

A.M., am or AM


abbreviation for (indicating the time period from midnight to midday)

ante meridiemCompare p.m.

Word Origin for a.m.

Latin: before noon

British Dictionary definitions for am (7 of 8)

Am.

abbreviation for

America(n)

British Dictionary definitions for am (8 of 8)

A/M

abbreviation for (in Canada)

Air Marshal
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

Medical definitions for am

Am

The symbol for the elementamericium
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for am (1 of 2)

Am

The symbol for americium.

Scientific definitions for am (2 of 2)

AM

Abbreviation of amplitude modulation
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.