OXFORD DICTIONARY
binomial, n. & adj.
--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.
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.
binomially adv.
F bin{ocirc}me or mod.L binomium (as BI-, Gk nomos part, portion)
THESAURUS
binomial
Linnaean, biaxial, bicameral, bicuspid, bifid, biform, binocular, binominal, bipartite, biped, bipetalous, bipinnate, bisexual, bivalent, classificatory, nomenclatural, onomastic, orismological, taxonomic, terminological, toponymic, toponymous, trinomial, unibivalent
ROGET THESAURUS
binomial
Duality
N
duality, dualism, duplicity, biplicity, biformity, polarity, two, deuce, couple, duet, brace, pair, cheeks, twins, Castor and Pollux, gemini, Siamese twins, fellows, yoke, conjugation, dispermy, doublets, dyad, span, two, twin, dual, dualistic, double, binary,
binomial, twin, biparous, dyadic, conduplicate, duplex, biduous, binate, diphyletic, dispermic, unijugate, tete-a-tete, coupled, conjugate, both, both the one and the other.