noun
: geometry that adopts all of Euclid's axioms except the parallel axiom, this being replaced by the axiom that through any point in a plane there pass more lines than one that do not intersect a given line in the plane
noun
: geometry that adopts all of Euclid's axioms except the parallel axiom, this being replaced by the axiom that through any point in a plane there pass more lines than one that do not intersect a given line in the plane
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012