A polynomial in which the sum of subscripts is the same in each term.
Isobaric Polynomial
See also
Homogeneous PolynomialExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Isobaric Polynomial." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/IsobaricPolynomial.html