—n.
1 an algebraic expression of the sum or the difference of two terms.
2 a two-part name, esp. in taxonomy.
—adj. consisting of two terms.
Phrases and idioms:
binomial classification a system of classification using two terms, the first one indicating the genus and the second the species. binomial distribution a frequency distribution of the possible number of successful outcomes in a given number of trials in each of which there is the same probability of success. binomial theorem a formula for finding any power of a binomial without multiplying at length.
Derivatives:
binomially adv.
Etymology: F binocircme or mod.L binomium (as BI-, Gk nomos part, portion)
Useful english dictionary. 2012.