From Biology-Online Dictionary | Biology-Online Dictionary


1. (Science: botany) Closed by a lid or cover, as the capsules of the mosses.

2. (Science: zoology) Having an operculum, or an apparatus for protecting the gills; said of shells and of fishes.

Origin: L. Operculatus, p.p. Of operculare to furnish with a lid, fr. Operculum lid.