Bible Dictionaries
Bivium

Webster's Dictionary

(n.) One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side (trivium), which includes three ambulacra.

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