Bible Dictionaries
Tri

Webster's Dictionary

(1):

A prefix (also used adjectively) denoting three proportional or combining part, or the third degree of that to the name of which it is prefixed; as in trisulphide, trioxide, trichloride.

(2):

A prefix meaning three, thrice, threefold; as in tricolored, tridentate.

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