The Collaborative International Dictionary
Hemimetabolic
Hemimetabolic \Hem`i*met`a*bol"ic\, a. (Zo["o]l.) Having an incomplete metamorphosis, the larv[ae] differing from the adults chiefly in laking wings, as in the grasshoppers and cockroaches.
Wiktionary
hemimetabolic
a. (context zoology English) Having an incomplete metamorphosis, the larvae differing from the adults chiefly in lacking wings.
WordNet
hemimetabolic
adj. (of an insect with aquatic young) undergoing incomplete metamorphosis in which the young does not resemble the adult [syn: hemimetabolous, hemimetamorphous, hemimetamorphic]