a.m.

adverb [not gradable] (also A.M.)

/ˈeɪˈem/

Definition

› used when referring to a time between twelve o’clock at night and twelve o’clock in the middle of the day; past the middle of the night, or in the morning: We fly out of New York late in the evening and arrive in London at 7 a.m. the next morning.

(Definition of a.m. adverb from the Cambridge Academic Content Dictionary © Cambridge University Press)

Focus on the pronunciation of a.m.