Bible Dictionaries
Epiphragm

Webster's Dictionary

(n.) A membranaceous or calcareous septum with which some mollusks close the aperture of the shell during the time of hibernation, or aestivation.

Bibliography Information
Webster, Noah. Entry for 'Epiphragm'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​e/epiphragm.html. 1828.