trinomial
1 of 2noun
tri·no·mi·al trī-ˈnō-mē-əl 
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
2 of 2adjective
1
: consisting of three mathematical terms
2
: of, relating to, or being a biological trinomial
Example Sentences
Recent Examples on the Web
Rosanna Xia, latimes.com, 30 June 2017
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, 30 June 2017 Word History
Etymology
Noun
tri- + -nomial (as in binomial)
First Known Use
Noun
1674, in the meaning defined at sense 1
Adjective
circa 1704, in the meaning defined at sense 1
Medical Definition
trinomial 1 of 2
noun
tri·no·mi·al trī-ˈnō-mē-əl
: a trinomial name
trinomial
2 of 2adjective
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