Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
heteroicous is an adjective meaning "having several forms of gametoecia on the same plant". It carries one recorded sense.
having several forms of gametoecia on the same plant
Definitions, synonyms and semantic relations for heteroicous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.