Definition of polythalamous in English:


Pronunciation /ˌpɒlɪˈθaləməs/


  • 1Entomology
    Of a plant gall: having more than one chamber.

  • 2Zoology
    Of or designating an animal having a shell, test, or skeleton with more than one chamber.


Early 19th century; earliest use found in William Kirby (1759–1850), entomologist and naturalist. From poly- + scientific Latin thalamus or its etymon ancient Greek θάλαμος inner chamber + -ous.