a.m. Meaning in the Cambridge English Dictionary
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Meaning of “a.m.” in the English Dictionary

"a.m." in British English

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a.m.adverb

uk   us   /ˌeɪˈem/
A1 used when referring to a ​time between twelve o'clock at ​night and twelve o'clock in the ​middle of the ​day: The first ​electionresults are ​expected around 1 a.m.
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amverb

uk   us   strong /æm/ weak /əm/
I form of be : Am I ​included?
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AMnoun

uk   us   /ˌeɪˈem/

a.m. noun (RADIO)

[U] abbreviation foramplitudemodulation: a ​type of ​radiobroadcasting in which the ​strength of the ​signalchanges, ​producingsound of a ​lowerquality than FM : You're ​listening to Radio Gold, ​broadcasting 24 ​hours a ​day on 909 AM.

a.m. noun (POLITICIAN)

[C] UK abbreviation forAssembly Member: a ​person who has been ​elected to the ​WelshAssembly
(Definition of a.m. from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"a.m." in American English

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a.m.adverb [not gradable]

(also A.M.)  us   /ˈeɪˈem/
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.

amverb

 us   /æm, əm, m/
(used with I) be : I am getting ​ready now.

AMnoun [U]

 us   /ˈeɪˈem/
abbreviation foramplitude modulation (= one of two ​maintypes of ​radiowaves used to ​broadcast in the US): Most of the ​talkradioprograms can be ​found on AM ​stations.
(Definition of a.m. from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “a.m.”
in Arabic صَباحا…
in Korean 오전…
in Portuguese antes do meio-dia, de manhã…
in Catalan del matí…
in Japanese 午前(中)…
in Chinese (Simplified) 午夜至正午, 午前, 上午…
in Turkish gece 12'den öğlen 12'ye kadar olan zaman dilimi…
in Russian до полудня…
in Chinese (Traditional) 午夜至正午, 午前, 上午…
in Italian antimeridiane…
in Polish rano…
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