am
verb
1st person singular present indicative of be.
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am
1 American
[am, uhm, m]
/ æm, əm, m /
verb
Am
2
American
Symbol, Chemistry.
AM
3
American
abbreviation
-
Electronics. amplitude modulation: a method of impressing a signal on a radio carrier wave by varying its amplitude.
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Radio. a system of broadcasting by means of amplitude modulation.
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of, relating to, or utilizing such a system.
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Asian male.
Am.
4
American
abbreviation
-
America.
-
American.
A/m
5
American
a.m.
6
American
abbreviation
-
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.
A.M.
7
American
am
1
British
verb
a.m.
2
British
abbreviation
AM
3
British
abbreviation
-
associate member
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Assembly Member (of the National Assembly of Wales)
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Albert Medal
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Master of Arts
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Also: am. amplitude modulation
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See a.m.
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Member of the Order of Australia
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Armenia (international car registration)
A/M
4
British
abbreviation
am
5
British
Am.
6
British
abbreviation
Am
7
British
symbol
am
8
British
abbreviation
AM
Scientific
Usage
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.
Etymology
Origin of am1
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
Origin of AM3
First recorded in 1935–40
Origin of a.m.6
From Latin ante merīdiem
Origin of A.M.7
A.M. ( def. 2 ) from Latin Artium Magister
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Soccer AM opened it up to every other fan out there. You would have them all speaking about the Showboat. It was nice to be in with some world-class players."
From BBC • Mar. 24, 2026
The suit was terminated in September 2024 after attorneys for the A-CAP insurers told the court that a settlement with AM Best had been reached.
From Barron's • Mar. 4, 2026
Dassault Aviation AM 2.11%increase; green up pointing triangle posted an increase in 2025 sales that beat market expectations, boosted by demand for its Falcon business jets.
From The Wall Street Journal • Mar. 4, 2026
He traveled to Capitol Hill to advocate for research funding alongside the organization I AM ALS and appeared on NBC’s “Brilliant Minds” as a firefighter battling the disease.
From Salon • Feb. 20, 2026
AM news fills his ears as soon as he turns on the ignition, startling him; his father had always been particular about turning off the radio at the end of a drive.
From "The Namesake" by Jhumpa Lahiri
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
