AM

Adverb

abbreviation alt-of initialism lowercase not-comparable sometimes

(sometimes lower case, often punctuated) Initialism of ante meridiem (borrowed from Latin); before noon.

Japanese Meaning

午前

I set my alarm for 6:00 AM to catch the early train.

早朝の電車に間に合うように、目覚ましを午前6時にセットした。

Sense（1）

(sometimes lower case, often punctuated) Initialism of ante meridiem (borrowed from Latin); before noon.