osmeterium

(redirected from osmeteria)
Related to osmeteria: Ptilinum

os·me·te·ri·um

 (ŏz′mĭ-tîr′ē-əm)
n. pl. os·me·te·ri·a (-tîr′ē-ə)
An eversible organ behind the head of certain caterpillars, containing strong-smelling chemicals that deter predators.

[New Latin osmētērium, from Greek osmē, smell.]

osmeterium

(ˌɒzmɪˈtɪərɪəm)
n, pl -ria (-rɪə)
(Zoology) zoology a gland in some caterpillars that secretes foul-smelling substances to deter predators