Как по Английски будет многочленный

adjective

Consisting of several terms.

Примеры использования:

Plants and animals were given long, polynomial latin names.

noun

An expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).

Примеры использования:

The papers look at algebraic curves, the riemann roch theorem and algebraic polynomials.