Dichotomy
From BiblePortal Wikipedia
Dichotomy [1]
(1): ( n.) A cutting in two; a division.
(2): ( n.) Division or distribution of genera into two species; division into two subordinate parts.
(3): ( n.) That phase of the moon in which it appears bisected, or shows only half its disk, as at the quadratures.
(4): ( n.) Successive division and subdivision, as of a stem of a plant or a vein of the body, into two parts as it proceeds from its origin; successive bifurcation.
(5): ( n.) The place where a stem or vein is forked.
(6): ( n.) Division into two; especially, the division of a class into two subclasses opposed to each other by contradiction, as the division of the term man into white and not white.