Ante Meridian From Latin, "Before Midday." A.M. opposed to PM, Post Meridian or after midday.
by jp February 04, 2004
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“he caught an AM styll

“he in the pen for an AM”
by T4256 April 04, 2020
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Amplitude Modulation

a way of applying information (voice or music) to a radio signal, beaten by SSB and then FM.

also: the old broadcast band from 530 to 1710 kHz.
"nobody listens to AM anymore"
by IrishRepublicanArmy October 12, 2003
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Ass man. Person that loves ass.
Not morning
Person with alot of ass pictures on the phone or computer.
Sentence : Damn hes an AM.
by telephonic April 26, 2011
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After Midnight.

The 22nd Century, non-Latin version of that very late, or early time of day.
-Omg, It's 1:35 in the AM? does that stand for After Midnight?

-No it doesnt but it might as well mean that. It means antes media something. It means before noon in Latin.

It's 2 in the AM. Nothing good ever happens in the AM.
by KaliWalle October 28, 2010
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Short for Amazing. AM is the equivalent to awesome, legit, cool, Koolio, swag, etc. The correct way to pronounced it is A.M. like on a clock.
Examples:

Alli: Do you like Starbucks?
Tori: Ya! That's AM

Josh: Hey have you ever been to the place down the road.
Jake: Ya. It's AM
by TheGreatWhite February 11, 2015
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I will see you in the AM for our brisk morning jog.
by Bungalow Bill March 18, 2002
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