Learn how to say Trinomial correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word trinomial:
1(of an algebraic expression) consisting of three terms.
2 Biology (of a taxonomic name) consisting of three terms where the first is the name of the genus, the second that of the species, and the third that of the subspecies or variety.
1an algebraic expression of three terms.
2 Biology a trinomial taxonomic name.
late 17th century: from tri- ‘three’, on the pattern of binomial