trinomial

noun
tri·no·mi·al | \trī-ˈnō-mē-əl \

Definition of trinomial 

(Entry 1 of 2)

1 : a polynomial of three terms

2 : a biological taxonomic name of three terms of which the first designates the genus, the second the species, and the third the subspecies or variety

trinomial

adjective

Definition of trinomial (Entry 2 of 2)

1 : consisting of three mathematical terms

2 : of, relating to, or being a biological trinomial

Examples of trinomial in a Sentence

Recent Examples on the Web: Noun

How necessary is intermediate algebra, a high school-level course on factoring trinomials, graphing exponential functions and memorizing formulas that most non-math or science students will rarely use in everyday life or for the rest of college? Rosanna Xia, latimes.com, "The politics of math: Is algebra necessary to obtain a college degree?," 30 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trinomial.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of trinomial

Noun

1674, in the meaning defined at sense 1

Adjective

circa 1704, in the meaning defined at sense 1

History and Etymology for trinomial

Noun

tri- + -nomial (as in binomial)

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The first known use of trinomial was in 1674

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More Definitions for trinomial

trinomial

noun
tri·no·mi·al | \trī-ˈnō-mē-əl \

Medical Definition of trinomial 

(Entry 1 of 2)

: a trinomial name

trinomial

adjective

Medical Definition of trinomial (Entry 2 of 2)

1 : being a name belonging to botanical or zoological nomenclature composed of a first term designating the genus, a second term designating the species, and a third term designating the subspecies or variety to which an organism belongs

2 : of or relating to trinomials trinomial nomenclature

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