hemimetabolous

also hem·i·met·a·bol·ic (-mĕt'əbôl'ĭk)
adj.
Undergoing a metamorphosis that lacks a pupal stage. Used of certain insects.

[HEMI- + METABOL(IC) + -OUS.]

hemimetabolism hem'i·me·tab'o·lism (-ə-lĭz'əm) n.

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The adjective has one meaning:

Meaning #1: (of an insect with aquatic young) undergoing incomplete metamorphosis in which the young does not resemble the adult
  Synonyms: hemimetabolic, hemimetamorphous, hemimetamorphic

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