Bible Dictionaries
Trigonometry

Webster's Dictionary

(1):

(n.) That branch of mathematics which treats of the relations of the sides and angles of triangles, which the methods of deducing from certain given parts other required parts, and also of the general relations which exist between the trigonometrical functions of arcs or angles.

(2):

(n.) A treatise in this science.

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