Trinomially

trinomial

[trahy-noh-mee-uhl]
adjective
1.
Algebra. consisting of or pertaining to three terms.
2.
Biology.
a.
pertaining to a scientific name comprising three terms, as of genus, species, and subspecies or variety.
b.
characterized by the use of such names.
noun
3.
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.
4.
Biology. a trinomial name, as Rosa gallica pumila.

Origin:
1665–75; tri- + (bi)nomial

trinomially, adverb
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World English Dictionary
trinomial (traɪˈnəʊmɪəl)
 
adj
1.  maths consisting of or relating to three terms
2.  biology denoting or relating to the three-part name of an organism that incorporates its genus, species, and subspecies
 
n
3.  maths a polynomial consisting of three terms, such as ax² + bx + c
4.  biology the third word in the trinomial name of an organism, which distinguishes between subspecies
 
[C18: tri- + -nomial on the model of binomial]
 
tri'nomially
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
trinomial   (trī-nō'mē-əl)  Pronunciation Key 
  1. A mathematical expression that is the sum of three monomials, such as ax2 + bx - c.

  2. A taxonomic designation indicating genus, species, and subspecies or variety, as in Brassica oleracea botrytis, the cauliflower.


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