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Webster 1913 Edition


Dioptrical

{

Di-op′tric

,

Di-op′tric-al

, }
Adj.
[Gr. [GREEK] belonging to the use of the [GREEK]; [GREEK] =
διά
through + the root of [GREEK] 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 1828 Edition


Dioptrical

DIOPTRIC

, DIOPTRICAL,
Adj.
[Gr., to see through; to see.]
1.
Affording a medium for the sight; assisting the sight in the view of distant objects; as a dioptric glass.
2.
Pertaining to dioptrics, or the science of refracted light.

Definition 2024


dioptrical

dioptrical

English

Adjective

dioptrical (comparative more dioptrical, superlative most dioptrical)

  1. Alternative form of dioptric
    • John Pringle Nichol
      dioptrical principles