Bible Dictionaries
Hydrozoa

Webster's Dictionary

(1):

(n. pl.) The Acalephae; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora.

(2):

(pl.) of Hydrozoon

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