Word Study
tripartition
CIDE DICTIONARY
tripartition, n. [Cf. F. tripartition.].
A division by threes, or into three parts; the taking of a third part of any number or quantity. [1913 Webster]
ROGET THESAURUS
tripartition
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 "tripartition" in Webster Dictionary Online