geometrical optics
noun
the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.
Origin of geometrical optics
First recorded in 1830–40
Words nearby geometrical optics
geometric mean,
geometric pace,
geometric progression,
geometric ratio,
geometric series,
geometrical optics,
geometrical pace,
geometrician,
geometricize,
geometrics,
geometrid