hypersurface: Meaning and Definition of

hy•per•sur•face

Pronunciation: (hī'pur-sûr"fis), [key]
— n.
  1. a mathematical object that generalizes the concept of surface from three-dimensional Euclidean space to hyperspace.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.