Meaning of “AC” in the English Dictionary

british dictionary
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"AC" in British English

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ACnoun

uk /ˌeɪˈsiː/ us /ˌeɪˈsiː/

AC noun (ELECTRICITY)

[ U ] abbreviation for alternating current: electrical current that regularly changes the direction in which it flows

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AC noun (AIR)

[ C or U ] US abbreviation for air conditioner or air conditioning

.ac

uk /dɒtˈæk/ us /dɑːtˈæk/

(Definition of “AC” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)