noun Etymology: G. F. B. Riemann Date: 1896 a non-Euclidean geometry in which straight lines are geodesics and in which the parallel postulate is replaced by the postulate that every pair of straight lines intersects
RIEMANNIAN GEOMETRY
Meaning of RIEMANNIAN GEOMETRY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012