Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
air-condition is a verb meaning "control the humidity and temperature of". It carries 2 recorded senses.
control the humidity and temperature of
“The room was cool because it had been air-conditioned”
Definitions, synonyms and semantic relations for air-condition come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.