binomial
UK /baɪˈnəʊ.mi.əl/ · US /baɪˈnoʊ.mi.əl/ adjective, noun
Forms binomials
- adjective Consisting of two terms, or parts.
- adjective (statistics) Of or relating to the binomial distribution.
- noun (algebra) A polynomial with two terms.
- noun (algebra) A quantity expressed as the sum or difference of two terms.
- noun (taxonomy) A scientific name at the rank of species, with two terms: a generic name and a specific name.
Synonyms
binome binomen binomial name binominal binominal name species name dionym
Etymology
Formed from Late Latin binōmium + -al. The derivation of binōmium is unclear. It was used by Gerard of Cremona in the 12th century. Suggested sources are the Latin nōmen (“name”), the Ancient Greek νομός (nomós, “distribution, pasture”), or the Old French nom (“name”).
Gérard de Crémone used the word in his translation of an Arabic commentary on Euclid, corresponding to the Greek "ἐκ δύο ὀνομάτων". Compare binomy and binominal, as well as the French binôme. By surface analysis, bi- + -nomial.
Webster’s 1913
- noun An expression consisting of two terms connected by the sign plus (+) or minus (-); as, a+b, or 7-3.
- adjective Consisting of two terms; pertaining to binomials; as, a binomial root.
- adjective 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.
Etymology [L. bis twice + nomen name: cf. F. binome, LL. binomius (or fr. bi- + Gr. distribution ). Cf. Monomial.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “binomial”, CC BY-SA 4.0. Details