Word Study
trisection
CIDE DICTIONARY
trisection, n. [Cf. F. trisection.].
The division of a thing into three parts, Specifically: (Geom.) the division of an angle into three equal parts. [1913 Webster]
ROGET THESAURUS
trisection
Trisection
N trisection, tripartition, trichotomy, third, third part, trifid, trisected, tripartite, trichotomous, trisulcate, Triadelphous, triangular, tricuspid, tricapsular, tridental, tridentate, tridentiferous, trifoliate, trifurcate, trigonal, trigrammic, trigrammatic, tripetalous, tripodal, tripodic, triquetral, triquetrous.For further exploring for "trisection" in Webster Dictionary Online