noun
ac
noun
1
Common abbreviation for air conditioning or an air conditioner.
"Can you turn the AC up? It's boiling in here."
How to Use Ac
Learner’s notesIn plain EnglishShort for air conditioning/air conditioner — this is by far the most common everyday use.
Common mistake
Also used as an abbreviation for "alternating current" in electrical contexts, and for other unrelated terms depending on the field — check context.
Word Forms
Acs plural
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Can you turn the _____ up? It's boiling in here.
Etymology
An abbreviation, most commonly for "air conditioning" in everyday use.