Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
dioecious is an adjective meaning "having male and female reproductive organs in separate plants or animals". It carries one recorded sense.
having male and female reproductive organs in separate plants or animals
Definitions, synonyms and semantic relations for dioecious come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.