From Greek διοπτρικός. Compare diopter.
dioptric (comparative more dioptric, superlative most dioptric)
(obsolete) Pertaining to a diopter.
Acting as a medium for sight; making use of refraction (of lenses, etc.).
(obsolete) Capable of being seen through.
dioptric (plural dioptrics)
(in the plural) The branch of optics concerned with refraction.
A dioptric telescope.
• diprotic, protidic, tripodic
Source: Wiktionary
Di*op"tric, a. (Optics)
Definition: Of or pertaining to the dioptre, or to the metric system of numbering glasses.
– n.
Definition: A dioptre. See Dioptre.
Di*op"tric, Di*op"tric*al, a. Etym: [Gr. dioptrique.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
31 March 2025
(adjective) done or made using whatever is available; “crossed the river on improvised bridges”; “the survivors used jury-rigged fishing gear”; “the rock served as a makeshift hammer”
The world’s most expensive coffee costs more than US$700 per kilogram. Asian palm civet – a cat-like creature in Indonesia, eats fruits, including select coffee cherries. It excretes partially digested seeds that produce a smooth, less acidic brew of coffee called kopi luwak.
