Bible Dictionaries
Tetrahedral

Webster's Dictionary

(1):

(a.) Having, or composed of, four sides.

(2):

(a.) Having the form of the regular tetrahedron.

(3):

(a.) Pertaining or related to a tetrahedron, or to the system of hemihedral forms to which the tetrahedron belongs.

Bibliography Information
Webster, Noah. Entry for 'Tetrahedral'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/tetrahedral.html. 1828.