binomial

nouns

(mathematics) a quantity expressed as a sum or difference of two terms; a polynomial with two terms
domain category
a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
is a type of (narrower)
the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable

adjectives

of or relating to or consisting of two terms
"binomial expression"
having or characterized by two names, especially those of genus and species in taxonomies
"binomial nomenclature of bacteria"