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nouna quadric surface generated by rotating a hyperbola around its main axistype of:
Definition that contains hyperboloid
- gregorian telescope a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror
- hyperboloidal having the shape of a hyperboloid
- cassegrainian telescope a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror