Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
brachycranial is an adjective meaning "having a short broad head with a cephalic index of over 80". It carries one recorded sense.
having a short broad head with a cephalic index of over 80
Definitions, synonyms and semantic relations for brachycranial come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.