dichotomy(redirected from Jointly exhaustive)
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1. Logic the division of a class into two mutually exclusive subclasses
2. Botany a simple method of branching by repeated division into two equal parts
3. the phase of the moon, Venus, or Mercury when half of the disc is visible
dichotomy(dÿ-kot -ŏ-mee) The moment of exact half-phase of the Moon, Mercury, or Venus.
The phase of the moon or an inferior planet at which exactly half of its disk is illuminated and the terminator is a straight line.
Divided in two parts.
Repeated branching or forking.
A division into two subordinate classes; for example, all white and all nonwhite, or all zero and all nonzero.