osmeterium definition

  • noun:
    • An eversible glandular sac regarding very first thoracic part of many caterpillars that secretes an unpleasant-smelling substance to prevent predators.
    • certainly one of a couple of scent body organs in the larvae of particular swallowtail butterflies.
    • In entomology, any organ dedicated to producing a scent or odor; specifically, a forked process located on the first part behind the pinnacle of certain butterfly-larvæ.

Related Sources

  • Definition for "osmeterium"
    • An eversible glandular sac regarding very first thoracic…
    • View More
  • Sentence for "osmeterium"
    • Not only do the earliest books…
    • View More
53 votes

How would you define osmeterium?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!