Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
callipygian is an adjective meaning "pertaining to or having finely developed buttocks". It carries one recorded sense.
pertaining to or having finely developed buttocks
“the quest for the callipygian ideal”
Definitions, synonyms and semantic relations for callipygian come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.