operculum operculum


  • (n) a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted


  • The trochus or top shell is a marine rhipidoglossate mollusk with a multispiral operculum.
Word of the Day
ennui ennui
/ɛ ˈnu i /