trinomial
[ trahy-noh-mee-uh l ]
/ traɪˈnoʊ mi əl /
adjective
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 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, adverbWords nearby trinomial
trinket,
trinketer,
trinketry,
trinocular,
trinodal,
trinomial,
trinucleotide,
trio,
trio sonata,
triode,
trioecious
Example sentences from the Web for trinomial
Duellman used the trinomial for this population and named a new subspecies, pallidus, from Nayarit.
A trinomial in algebra is a quantity consisting of three terms.
Orthography |Elmer W. CavinsThe trinomial is used whenever subspecific identities could be made with a reasonable degree of certainty.
Summer Birds From the Yucatan Peninsula |Erwin E. KlaasI 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, adverbWord Origin for trinomial
C18:
tri- +
-nomial on the model of
binomial
Scientific definitions for trinomial
trinomial
[ trī-nō′mē-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.