Meaning & use
AC
Short for air conditioning, a system that cools and controls the humidity of indoor air.
See it in a sentence
We turned on the AC as soon as the temperature hit ninety degrees.
The mechanic checked the AC before the long summer road trip.
A note on using this word
AC can also stand for 'alternating current,' the type of electrical current used in most homes, so context matters.
Words with a similar meaning
This term is best learned through its definition and examples.
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. abbreviation
Short for alternating current, an electric current that periodically reverses direction.
Household outlets supply AC power rather than the DC power used in batteries.
Make it your own
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