An algebraic expression containing more than one term (cf., binomial). The term is also used to refer to a polynomial.
Multinomial
See also
Binomial, Multichoose, Multinomial Coefficient, Multinomial Series, PolynomialRelated Wolfram sites
http://functions.wolfram.com/GammaBetaErf/Multinomial/Explore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Multinomial." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Multinomial.html