trinomial
Americanadjective
-
Algebra. consisting of or pertaining to three terms.
-
Biology.
-
pertaining to a scientific name comprising three terms, as of genus, species, and subspecies or variety.
-
characterized by the use of such names.
-
noun
-
Algebra. an expression that is a sum or difference of three terms, as 3 x + 2 y + z or 3 x 3 + 2 x 2 + x.
-
Biology. a trinomial name, as Rosa gallica pumila.
adjective
-
maths consisting of or relating to three terms
-
biology denoting or relating to the three-part name of an organism that incorporates its genus, species, and subspecies
noun
-
maths a polynomial consisting of three terms, such as ax ² + bx + c
-
biology the third word in the trinomial name of an organism, which distinguishes between subspecies
-
A mathematical expression that is the sum of three monomials, such as ax 2 + bx − c.
-
A taxonomic designation indicating genus, species, and subspecies or variety, as in Brassica oleracea botrytis, the cauliflower.
Other Word Forms
Etymology
Origin of trinomial
First recorded in 1665–75; tri- + (bi)nomial
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Genus is the first word of the trinomial name and a subdivision of a larger plant family; some have only a single kind of plant, such as Ginkgo, while others, like Rosa, contain hundreds.
From Seattle Times ● Mar. 25, 2023
The trinomial 9x2 + 24x + 16 is called a perfect square trinomial.
From Textbooks ● May 6, 2020
In the first example, all terms in the trinomial were positive.
From Textbooks ● May 6, 2020
Notice that every monomial, binomial, and trinomial is also a polynomial.
From Textbooks ● May 6, 2020
For just at this moment the dog has actually handed in a fourth Whitsuntide day, and expanded the trinomial root of the given power of joy into a quadrinomial.
From Hesperus or Forty-Five Dog-Post-Days Vol. II A Biography by Jean Paul
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
