Algebra. consisting of or pertaining to three terms.
pertaining to a scientific name comprising three terms, as of genus, species, and subspecies or variety.
characterized by the use of such names.
Algebra. an expression that is a sum or difference of three terms, as 3x + 2y + z or 3x3 + 2x2 + x.
Biology. a trinomial name, as Rosa gallica pumila.
- tri·no·mi·al·ly, adverb
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How to use trinomial in a sentence
The trinomial is used whenever subspecific identities could be made with a reasonable degree of certainty.Summer Birds From the Yucatan Peninsula | Erwin E. Klaas
Duellman used the trinomial for this population and named a new subspecies, pallidus, from Nayarit.
I have sometimes loosely speculated on what nomenclature would come to, and concluded that it would be trinomial.More Letters of Charles Darwin | Charles Darwin
A trinomial in algebra is a quantity consisting of three terms.Orthography | Elmer W. Cavins
British Dictionary definitions for trinomial
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
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
- trinomially, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for trinomial
A mathematical expression that is the sum of three monomials, such as ax2 + bx - c.
A taxonomic designation indicating genus, species, and subspecies or variety, as in Brassica oleracea botrytis, the cauliflower.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.