Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Consisting of three names or terms, as a taxonomic designation.
  • adjective Mathematics Consisting of three terms.
  • noun A three-part taxonomic designation indicating genus, species, and subspecies or variety, such as Brassica oleracea botrytis, the cauliflower.
  • noun Mathematics An algebraic expression consisting of three terms connected by plus or minus signs, such as x2 + 4x -3.

from The Century Dictionary.

  • In zoology and botany:
  • Consisting of three terms, as the technical name of a subspecies; trionymal: thus, the name Certhia familiaris americana is trinomial. See binomial, polynomial.
  • Using or admitting trinomial or trionymal names in certain cases: as, the trinomial system of nomenclature. Also trinominal.
  • In algebra, consisting of three terms connected by either of the signs + and—: thus, a + b + c, or x—2 xy + y is a trinomial quantity.
  • noun A technical name consisting of three words, of which the first is the name of the genus, the second that of the species, and the third that of a geographical race, subspecies, or variety; a trionym.
  • noun In algebra, a trinomial expression. See I., 2.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Math.) A quantity consisting of three terms, connected by the sign + or -.
  • adjective (Math.) Consisting of three terms; of or pertaining to trinomials.
  • adjective (Nat. Hist.) Consisting of, or involving the use of, three terms.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Consisting of three names or parts or terms.
  • noun algebra An expression consisting of 3 terms.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[tri– + (bi)nomial.]

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Examples

  • The mythology which you have created for your world has a trinomial aspect to it chiefly and then further spreads out.

    Interview with N.K. Jemisin (Interview by Mihir Wanchoo) Cindy 2010

  • Van Buren was replaced by William Henry Harrison, the first gratuitously trinomial president.

    Bill of Rights or Bill of Goods? 2008

  • Factoring a trinomial part 2 is good for those who do not yet understand how to do a question like 3x2 + 14xy + 8y2 ..it helped me, er-- with the exception of much pause, rewind, playback, pause, rewind and etc hehe.

    My Wife is Brilliant! Darren Kuropatwa 2005

  • A _trinomial_ in algebra is a quantity consisting of _three terms_.

    Orthography As Outlined in the State Course of Study for Illinois Elmer W. Cavins

  • I have sometimes loosely speculated on what nomenclature would come to, and concluded that it would be trinomial.

    More Letters of Charles Darwin — Volume 1 Charles Darwin 1845

  • The tutoring subscription service, found at virtualnerd. com, uses hundreds of online videos -- similar to YouTube -- to guide students visually through math and physics concepts, such as expressions, polynomials and factoring a trinomial.

    PhysOrg.com - latest science and technology news stories 2010

  • Our lessons involved multiplying a pageful of binomials with the good ol 'FOIL method, squaring another pageful, multiplying a few dozen more for review ... eventually moving on to the exciting operation of factoring a trinomial!

    ScienceBlogs Channel : Life Science 2010

  • The tutoring subscription service, found at virtualnerd. com, uses hundreds of online videos -- similar to YouTube -- to guide students visually through math and physics concepts, such as expressions, polynomials and factoring a trinomial.

    PhysOrg.com - latest science and technology news stories 2010

  • But as the WSJ's newly trinomial Michael Howard Saul reported this morning, Bloomberg's new budget stripped away $867,000 again -- leaving de

    NY Daily News 2010

  • The tutoring subscription service, found at virtualnerd. com, uses hundreds of online videos -- similar to YouTube -- to guide students visually through math and physics concepts, such as expressions, polynomials and factoring a trinomial.

    PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

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