Meaning of “air conditioning” - Learner’s Dictionary

air conditioning

noun [ U ] uk us

B1 a system that keeps the air cool in a building or car

air-conditioned uk us /ˈeəkənˌdɪʃənd/ adjective

having air conditioning:

an air-conditioned office

(Definition of “air conditioning” from the Cambridge Learner’s Dictionary © Cambridge University Press)