**Bi*no"mi*al** (?), n. [L. *bis* twice + *nomen* name: cf. F. *binome*, LL. *binomius* (or fr. *bi-* + Gr. distribution ?). Cf. Monomial.] Alg.

An expression consisting of two terms connected by the sign plus (+) or minus (-); as, a+b, or 7-3.

© Webster 1913.

**Bi*no"mi*al**, a.

**1.**

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

**2.** Nat. Hist.

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.

Binomial theorem Alg., the theorem which expresses the law of formation of any power of a binomial.

© Webster 1913.