Here you will find one or more explanations in English for the word Trinomial.
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Trinomial
Trinomial Tri*no"mi*al, a. (Nat. Hist.)
Consisting of, or involving the use of, three terms; as, a
trinomial systematic name specifying the genus, species, and
variety.
TrinomialTrinomial Tri*no"mi*al, n. [Pref. tri- + -nomial as in
binomial: cf. F. trin[^o]me.] (Math.)
A quantity consisting of three terms, connected by the sign +
or -; as, x + y + z, or ax + 2b - c^2. Trinomial
Trinomial Tri*no"mi*al, a. (Math.)
Consisting of three terms; of or pertaining to trinomials;
as, a trinomial root.
Meaning of Trinomial from wikipedia