dioptric Meaning, Definition & Usage

Di*op"tric adjective
Definitions
  1. (Optics) Of or pertaining to the dioptre, or to the metric system of numbering glasses. -- n. A dioptre. See Dioptre.
Di*op"tric, Di*op"tric*al adjective (Also<
  • Dioptric
  • Dioptrical
)
Etymology
Gr. belonging to the use of the = through + the root of I shall see: cf. F. dioptrique.
Definitions
  1. 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.

Webster 1913