Meaning of TRINOMIAL in English

TRINOMIAL

I. noun Etymology: tri- + -nomial (as in binomial) Date: 1674 a polynomial of three terms, a biological taxonomic name of three terms of which the first designates the genus, the second the species, and the third the subspecies or variety, II. adjective Date: circa 1704 consisting of three mathematical terms, of, relating to, or being a biological ~

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.