- Having two eyes. - Pertaining to both eyes; employing both eyes at once;
as, binocular vision. - Adapted to the use of both eyes; as, a binocular
microscope or telescope. - A binocular glass, whether opera glass, telescope, or
microscope.
- Of or pertaining to dioptrics; assisting vision by
means of the refraction of light; refractive; as, the dioptric system;
a dioptric glass or telescope.
- The lens, or combination of lenses, at the eye end of a
telescope or other optical instrument, through which the image formed
by the mirror or object glass is viewed.
- A dioptric telescope, fitted with two tubes joining, so as
to enable a person to view an object with both eyes at once; a
double-barreled field glass or an opera glass.