A.M.
adjective
1 a.m.
Before noon.
synonym: ante meridiem.
adverb
1 A.M.
Before noon:
— Let's meet at 11 A.M..
synonym: ante meridiem.
noun
Roget 125: morning, morn, forenoon, a. m., prime, dawn, daybreak; dayspring†, foreday†, sunup; peep of day, break of day; aurora; first blush of the morning, ... show more
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