Bible Dictionaries
Subtend

Webster's Dictionary

(v. t.) To extend under, or be opposed to; as, the line of a triangle which subtends the right angle; the chord subtends an arc.

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