(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.