I. trīˈnōmēəl noun
( -s )
Etymology: tri- + -nomial (as in binomial, n.)
1. : a polynomial of three terms
2. : a trinomial name
II. (ˈ) ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷ adjective
Etymology: tri- + -nomial (as in binomial, adjective)
1. : consisting of three mathematical terms
2. : being a name belonging to botanical or zoological nomenclature composed of a first term designating the genus, a second term designating the species, and a third term designating the subspecies or variety to which an organism belongs
3. : of or relating to trinomials
trinomial nomenclature