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am

1 of 5

present tense first-person singular ofbe

America; American

Am

3 of 5

symbol

americium
often attributive
:a broadcasting system using amplitude modulation
also:a radio receiver of such a system

AM

5 of 5

abbreviation

1
airmail
2
air marshall
3
Air Medal
4
[Latinanno mundi]in the year of the world
—often printed in small capitals
5
ora.m. or Britishamante meridiem
6
[New Latinartium magister]master of arts
7
associate member
8
chiefly BritishAssembly Member
9
Ave Maria

Word History

Etymology

Middle English, from Old Englisheom; akin to Old Norseem am, Latinsum, Greekeimi

Noun

amplitudemodulation

First Known Use

Noun

1939, in the meaning definedabove

Time Traveler
The first known use ofam was in 1939

Browse Nearby Words

Cite this Entry

“Am.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/am. Accessed 30 Mar. 2025.

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Kids Definition

am

1 of 2

present 1st singular ofbe

AM

2 of 2noun
ˈā-ˌem
:a system of broadcasting using amplitude modulation
also:a receiver of radio waves broadcast by such a system
AMadjective

Medical Definition

Am

1 of 2symbol
americium

AM

2 of 2abbreviation
1
[Latinante meridiem]before noon
2
[Medieval LatinArtium Magister]master of arts

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