Dichotomy

Chamber's Twientieth Century Dictionary · 1908 · p. 30

dī-kot′o-mi, n. a division into two parts.— v.t. and v.i. Dichot′omise .— adj. Dichot′omous .— adv. Dichot′omously . [Gr., from dich a , in two, and temnein , to cut.]