Of or relating to a geometric system in which two or more lines can be drawn through any point in a plane and not intersect a given line in the plane.

• 双曲线几何的属于或有双曲线几何体系有关的，在这体系中从一平面上的一点能画二条或多条直线，而且这些直线不与平面中已画出的那条直线相交