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osmeterium

play
noun os·me·te·ri·um \ˌäz-mə-ˈtir-ē-əm\

Definition of osmeterium

plural

osmeteria

play \-ē-ə\
  1. :  a protrusible glandular process of swallowtail larvae that emits a disagreeable odor for defensive purposes



Origin and Etymology of osmeterium

New Latin, irregular from Greek osmē odor


First Known Use: 1816


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