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Abbreviation of ante meridiem (“before noon”).
Etymology from Wiktionary, CC BY-SA 4.0.
a.m.
Today it means: In the 12-hour period from midnight to noon (the first half of the day) when using the 12-hour clock. Full definition →
Today it means: In the 12-hour period from midnight to noon (the first half of the day) when using the 12-hour clock. Full definition →
Abbreviation of ante meridiem (“before noon”).
Etymology from Wiktionary, CC BY-SA 4.0.