- consisting of or pertaining to three terms.
- Biology.
- pertaining to a scientific name comprising three terms, as of genus, species, and subspecies or variety.
- characterized by the use of such names.
- an expression that is a sum or difference of three terms, as 3x + 2y + z or 3x3 + 2x2 + x.
- a trinomial name, as Rosa gallica pumila.
- consisting of or relating to three terms
- denoting or relating to the three-part name of an organism that incorporates its genus, species, and subspecies
- a polynomial consisting of three terms, such as ax ² + bx + c
- the third word in the trinomial name of an organism, which distinguishes between subspecies
