A nonic surface is an algebraic surface of degree 9.
Enneper's minimal surface and the quaste surface are examples of nonic surfaces.
Nonic Surface
See also
Algebraic Surface, Quaste SurfaceExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Nonic Surface." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/NonicSurface.html