e/Operculum (bryozoa)

Information
has gloss	eng: In the bryozoan order Cheilostomata, the operculum is a calcareous or chitinous lid-like structure that protects the opening through which the polypide protrudes.
lexicalization	eng: operculum
instance of	(noun) marine or freshwater animals that form colonies of zooids phylum Bryozoa, polyzoa, Bryozoa