am

1 of 5

present tense first-person singular of be

2 of 5

abbreviation (1)

America; American

3 of 5

symbol

americium

4 of 5

noun

ˈā-ˌem

often attributive

: a broadcasting system using amplitude modulation

also : a radio receiver of such a system

5 of 5

abbreviation

airmail

air marshall

Air Medal

[Latin anno mundi] in the year of the world

—often printed in small capitals

or a.m. or British am ante meridiem

[New Latin artium magister] master of arts

associate member

chiefly British Assembly Member

Ave Maria

Word History

Etymology

Middle English, from Old English eom; akin to Old Norse em am, Latin sum, Greek eimi

Noun

amplitude modulation

First Known Use

Noun

1939, in the meaning defined above

Time Traveler

The first known use of am was in 1939

See more words from the same year

Cite this Entry

Style

“Am.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/am. Accessed 28 Nov. 2024.

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Kids Definition

1 of 2

present 1st singular of be

2 of 2 noun

ˈā-ˌem

: a system of broadcasting using amplitude modulation

also : a receiver of radio waves broadcast by such a system

AM adjective

Medical Definition

1 of 2 symbol

americium

2 of 2 abbreviation

[Latin ante meridiem] before noon

[Medieval Latin Artium Magister] master of arts

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