\O*per"cu*late\, Operculated \O*per"cu*la`ted\, a.
[L. operculatus, p. p. of operculare to furnish with a lid,
fr. operculum lid.]
1. (Bot.) Closed by a lid or cover, as the capsules of the
   mosses.
2. (Zo["o]l.) Having an operculum, or an apparatus for
   protecting the gills; -- said of shells and of fishes.