AC Definition in the Cambridge English Dictionary

Definition of “AC” - English Dictionary

"AC" in British English

See all translations


uk   us   /ˌeɪˈsiː/


[U] abbreviation foralternatingcurrent: ​electricalcurrent that ​regularlychanges the ​direction in which it ​flows

AC noun (AIR)

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


uk   /dɒtˈæk/  us   /dɑːt-/
abbreviation foracademicinstitution: used in internet ​addresses that ​belong to ​academicinstitutions such as ​universities:
(Definition of AC from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “AC”
in Chinese (Simplified) 电, 交流电…
in Turkish değişken elektrik akımı…
in Russian переменный ток…
in Chinese (Traditional) 電, 交流電…
in Polish AC (= prąd przemienny)…
What is the pronunciation of AC?
Add Cambridge dictionaries to your browser to your website
Word of the Day


a large group of soldiers who form a part of an army, especially the ancient Roman army

Word of the Day

There is no such thing as a true synonym in English. Discuss!
There is no such thing as a true synonym in English. Discuss!
by Kate Woodford,
November 25, 2015
In the Cambridge Advanced Learner’s Dictionary the word ‘synonym’ is defined as ‘a word or phrase that has the same or nearly the same meaning as another word or phrase in the same language’. As you might expect, definitions for this word are broadly similar in other dictionaries and yet the italicized

Read More 

conversational user interface noun
conversational user interface noun
November 30, 2015
a computer interface that provides information to users in normal, conversational speech in response to spoken requests Nearly every major tech company—from Amazon to Intel to Microsoft to Google—is chasing the sort of conversational user interface that Kaplan and his colleagues at PARC imagined decades ago.

Read More