(Latin: before midday) The time interval from midnight to midday; Also called: A.M., a.m., ante meridiem.
2 Air Medal.
3 [Latin anno mundi] in the year of the world — often printed in small capitals.
4 ante meridiem — often not cap and often punctuated.
5 [New Latin artium magister] master of arts.
Abbreviation for ante meridiem (Latin “before noon”).