n. (pl. -ies) 1 a a division into two, esp. a sharply defined one. b the result of such a division. 2 binary classification. 3 Bot. & Zool. repeated bifurcation. dichotomic adj. dichotomize v. dichotomous adj.
[ mod.L dichotomia f. Gk dikhotomia f. dikho- apart + -TOMY ]