A set of two terms or names; in the probabilistic or statistical sense it corresponds to a Bernoulli trial. SEE ALSO: binary combination. [bi- + G. nomos, name]
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bi·no·mi·al bī-'nō-mē-əl n a biological species name consisting of two terms
binomial adj
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bi·no·mi·al (bi-noґme-əl) [bi- + L. nomen name] 1. composed of two names, as the scientific names of organisms formed by combination of genus and species names (binomial nomenclature). 2. a mathematical expression obtained by taking powers of the sums or differences of two terms; see binomial coefficient and distribution, under coefficient and distribution.Medical dictionary. 2011.