hemimetabolous Syllabification: (hem·i·me·tab·o·lous)Pronunciation: /ˌheməməˈtabələs/Definition of hemimetabolous adjective Entomology (of an insect) having no pupal stage in the transition from larva to adult. Derivatives hemimetabolicPronunciation: /ˌheməˌmetəˈbälik/ adjective hemimetabolous in other Oxford dictionaries Definition of hemimetabolous in the British & World English dictionary