degree of a monomial	The degree of a monomial is the power to which the variable is raised. For example, the monomial 5y² has a degree of 2. If the monomial contains several variables then the degree of the monomial is the sum of the degree of all the variables. For example, the monomial 7x²y³ has a degree of 5.
degree of a polynomial	The highest exponent or sum of exponents of a term in a polynomial. For example, 7x²y³ + 3x²y − 8 is a 5th degree polynomial because the highest sum of exponents in a term is 2 + 3 = 5.
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.
term	A number or product of a number and variables raised to powers. 4x, −5y², 6, and x³y⁴ are all examples of terms.
trinomial	A polynomial with exactly three terms, such as 5y² – 4y + 4 and x² + 2xy +y².