Cheilostomata
plural noun
Chei·lo·sto·ma·ta
ˌkīləˈstōmətə
: a large order of marine bryozoans (class Gymnolaemata) having the colony erect or encrusting, the zooecia more or less tubular, and the aperture closed by a chitinous operculum when the polypide is retracted
Word History
Etymology
borrowed from New Latin, plural of Cheilostoma, from cheilo- cheilo- + -stoma -stoma entry 1
First Known Use
1852, in the meaning defined above