from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A dry layer of mucus used by a snail or mollusk to seal itself inside its shell during hibernation.
from the GNU version of the Collaborative International Dictionary of English
- n. A membranaceous or calcareous septum with which some mollusks close the aperture of the shell during the time of hibernation, or estivation.
from The Century Dictionary and Cyclopedia
- n. In botany: The disk-like apex of the columella of Polytricheæ, which extends over the mouth of the capsule below the operculum.
- n. A delicate membrane closing the cup-like receptacle of the Nidulariacei.
- n. In conchology, the plate of hardened mucus secreted by a gastropod, as a snail, to plug up or seal the opening of the shell during hibernation; a sort of temporary or false operculum, sometimes hardened by calcareous deposit. See clausilium.
Sorry, no etymologies found.