A polynomial 
that, when evaluated over each 
in the domain of definition, results in the same value. The
simplest example is 
for 
and 
a constant.
Constant Polynomial
See also
Polynomial, Zero PolynomialExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Constant Polynomial." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ConstantPolynomial.html