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单词 trinomial
释义

trinomial

[ trahy-noh-mee-uhl ]
/ traɪˈnoʊ mi əl /

adjective

Algebra. consisting of or pertaining to three terms.
Biology.
  1. pertaining to a scientific name comprising three terms, as of genus, species, and subspecies or variety.
  2. characterized by the use of such names.

noun

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.

Origin of trinomial

First recorded in 1665–75; tri- + (bi)nomial

OTHER WORDS FROM trinomial

tri·no·mi·al·ly, adverb

Words nearby trinomial

trinket, trinketer, trinketry, trinocular, trinodal, trinomial, trinucleotide, trio, triode, trioecious, triol
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for trinomial

  • Duellman used the trinomial for this population and named a new subspecies, pallidus, from Nayarit.

    A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope|John D. Lynch
  • A trinomial in algebra is a quantity consisting of three terms.

    Orthography|Elmer W. Cavins
  • 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
  • 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

British Dictionary definitions for trinomial

trinomial
/ (traɪˈnəʊmɪəl) /

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

Derived forms of trinomial

trinomially, adverb

Word Origin for trinomial

C18: tri- + -nomial on the model of binomial
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

trinomial
[ trī-nōmē-əl ]

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.
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更新时间:2024/11/13 20:24:21