| like terms | Terms that contain the same variables raised to the same powers. For example, 3x and −8x are like terms, as are 8xy2 and 0.5xy2. |
| monomial | A polynomial with exactly one term. 4x, −5y2, and 6 are all examples of monomials. |
| polynomial | A monomial or the sum or difference of two or more monomials. |