Bible Dictionaries
Heterocercy

Webster's Dictionary

(n.) Unequal development of the tail lobes of fishes; the possession of a heterocercal tail.

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