tri|no|mi|al «try NOH mee uhl», noun, adjective.
–n.
1. Algebra. an expression consisting of three terms connected by plus or minus signs. a + bx2—2 is a trinomial.
2. Zoology, Botany. a scientific name of an animal or plant consisting of three terms, the first indicating the genus, the second the species, and the third the subspecies or variety. Malus prunifolia robusta is a trinomial.
–adj.
consisting of three terms.
╂[< tri- + -nomial; patterned on binomial]
–tri|no´mi|al|ly, adverb.
Useful english dictionary. 2012.