/ Dictionary / Index B binomial: Meaning and Definition of Find definitions for: bi•no•mi•al Pronunciation: (bī-nō'mē-ul), [key] — n. an expression that is a sum or difference of two terms, as 3x + 2y and x − 4x. a taxonomic name consisting of a generic and a specific term, used to designate species. —adj. consisting of or pertaining to two terms or a binomial. consisting of or characterized by binomials. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: binomial (Thesaurus) binocular fusion binomial coefficient Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language