I. WORDS EXPRESSING ABSTRACT RELATIONS

V. NUMBER

2. DETERMINATE NUMBER

[Division into three parts] Trisection.

[Nouns] trisection, tripartition, trichotomy; third, third part.

[Verbs] trisect, divide into three parts.

[Adjectives] trifid; trisected; tripartite, trichotomous, trisulcate.

triadelphous, triangular, tricuspid, tricapsular, tridental, tridentate, tridentiferous, trifoliate, trifurcate, trigonal, trigrammic, trigrammatic, tripetalous, tripodal, tripodic, triquetral, triquetrous.