Bible Dictionaries
Cnidaria

Webster's Dictionary

(n. pl.) A comprehensive group equivalent to the true Coelenterata, i. e., exclusive of the sponges. They are so named from presence of stinging cells (cnidae) in the tissues. See Coelenterata.

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