tri·sect /ˈtraɪˌsɛkt, traɪˈ/
(vt.)分成三部分,分成三截,三等分
Tri·sect v. t. [imp. & p. p. Trisected; p. pr. & vb. n. Trisecting.]
1. To cut or divide into three parts.
2. Geom. To cut or divide into three equal parts.
◄ ►
trisect
v : cut in three; "trisect a line"