English Reference

Word

binomial

Phoneticsbi·no·mi·al

US/baɪˈnoʊmiəɫ/

UK/baɪnˈəʊmɪəl/

Definitions

01mathematics

C1 · Math

n. a mathematical expression that has two parts connected by a plus or minus sign.

n. an algebraic expression consisting of the sum or difference of two terms.

“In your algebra homework, 'x + 5' is a simple binomial.”

“The student struggled to expand the binomial to the third power using the standard formula.”

Technical

Synonyms

Antonyms

monomialtrinomial

02biology

C1 · Science

n. a scientific name for a living thing that uses two words, like 'Homo sapiens'.

n. a taxonomic name at the rank of species, consisting of a generic name and a specific epithet.

“Every plant has a formal binomial to help scientists identify it exactly.”

“Linnaeus established the system of binomial nomenclature to provide a universal language for biological classification.”

Technical

Synonyms

scientific namespecies name

03having two parts

C1

adj. consisting of two names, terms, or parts.

adj. composed of or relating to two names or terms; non-gradable.

“The researcher used a binomial system to categorize the survey results.”

“The paper proposes a binomial classification model to distinguish between the two distinct types of chemical reactions observed.”

Academic

Synonyms

04statistics

C1 · Science

adj. relating to a type of math that predicts the chances of two possible results.

adj. relating to the binomial distribution, which models the number of successes in a fixed number of independent trials.

“We used a binomial test to see if the coin was fair.”

“The binomial distribution is appropriate here because each trial has exactly two possible outcomes with a constant probability of success.”

Technical

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 aν 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.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Statistics

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

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