A quadronomial is a polynomial that consists of four terms. It follows the general form ( ax^n + bx^{n-1} + cx^{n-2} + d ), where ( a, b, c, ) and ( d ) are coefficients and ( n ) is a non-negative integer. Quadronomials can be simplified or factored, similar to other polynomials, and are used in various mathematical contexts, including algebra and calculus.