Di*op"tric (?), a. Optics
Of or pertaining to the dioptre, or to the metric system of numbering glasses.
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n.
A dioptre. See Dioptre.
© Webster 1913.
Di*op"tric (?), Di*op"tric*al (?), a. [Gr. belonging to the use of the ; = through + the root of I shall see: cf. F. dioptrique.]
Of or pertaining to dioptrics; assisting vision by means of the refraction of light; refractive; as, the dioptric system; a dioptric glass or telescope.
"
Dioptrical principles."
Nichol.
Dioptric curve Geom., a Cartesian oval. See under Cartesian.
© Webster 1913.