Meaning of quadrinomial

quad•ri•no•mi•al

Pronunciation: (kwod"ru-nō'mē-ul), [key]
— Algebra. Algebra.
—adj.
  1. consisting of four terms.
—n.
  1. a quadrinomial expression.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.