Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class I. Words Expressing Abstract RelationsSection V. Number
2. Determinate Number
91. [Division into Two Parts.] Bisection.
NOUN:BISECTION, bipartition; dichotomy, subdichotomy [rare], halving &c. v.; dimidiation.BIFURCATION, furcation, forking, branching, ramification, divarication; fork, crotch, furculum, prong; fold.
HALE, moiety.
VERB:BISECT, halve, hemisect [rare], divide, split, cut in two, cleave, dimidiate, dichotomize.
GO HALVES, divide with.
SEPARATE, fork, bifurcate, furcate, divaricate; branch off or out; ramify.
ADJECTIVE:BISECTED &c. v.; cloven, cleft; bipartite, dimidiate, divaricate, biconjugate, bicuspid, bifid; bifurcous [rare], bifurcate, bifurcated; bigeminate, distichous, distichal, dichotomous, furcular, furcate, lituate [rare]; semi-, demi-, hemi-.