Wordnet 3.0
NOUN (1)
1.
(mathematics) a non-Euclidean geometry in which the parallel axiom is replaced by the assumption that through any point in a plane there are two or more lines that do not intersect a given line in the plane;
- Example: "Karl Gauss pioneered hyperbolic geometry"
WordNet (r) 3.0 (2006):
hyperbolic geometry
n 1: (mathematics) a non-Euclidean geometry in which the
parallel axiom is replaced by the assumption that through
any point in a plane there are two or more lines that do
not intersect a given line in the plane; "Karl Gauss
pioneered hyperbolic geometry"