trisect

v [Tn] divide (a line, an angle, etc) into three equal parts 将（一线、 角等）分成三等份.

trimming, trinitrotoluene, trinity, Trinity Sunday, trinket, trio, trip, trip sb. up, trip-wire, tripartite, tripe, triple, triplet, triplicate, triply, tripod, tripper, tripping, trippingly, triptych, trisection, trite, triumph, triumphal, triumphant, triumphantly, triumvirate, trivet, trivia, trivial, triviality, trivialization, trivialisation, trivialize, trivialize, trivialise, trivially, trod, trodden, troglodyte, troika, Trojan,