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Binomial

(Science: mathematics) An expression consisting of two terms connected by the sign plus (_) or minus; as, a_b, or 7-3.

Origin: L. Bis twice _ nomen name: cf. F. Binome, LL. Binomius (or fr. Bi- _ gr. Distribution ?). Cf. Monomial.

1. Consisting of two terms; pertaining to binomials; as, a binomial root.

2. Having two names; used of the system by which every animal and plant receives two names, the one indicating the genus, the other the species, to which it belongs.

(Science: mathematics) binomial theorem, the theorem which expresses the law of formation of any power of a binomial.