(Oph*thal"mite) n. [Gr. 'ofqalmo`s the eye.] (Zoöl.) An eyestalk; the organ which bears
the compound eyes of decapod Crustacea.
(Oph*thal`mo*log"ic*al) a. Of or pertaining to ophthalmology.
(Oph`thal*mol"o*gist) n. One skilled in ophthalmology; an oculist.
(Oph`thal*mol"o*gy) n. [Gr. 'ofqalmo`s the eye + -logy: cf. F. ophthalmologie.] The
science which treats of the structure, functions, and diseases of the eye.
(Oph`thal*mom"e*ter), n. [Gr. 'ofqalmo`s eye + -meter.] (Physiol.) An instrument
devised by Helmholtz for measuring the size of a reflected image on the convex surface of the cornea
and lens of the eye, by which their curvature can be ascertained.
(Oph*thal"mo*scope) n. [From Gr. 'ofqalmo`s the eye + -scope.] (Physiol.) An
instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a
mirror (usually concave) and the interior is then examined with or without the aid of a lens. Oph*thal`mo*scop"ic
(Oph`thal*mos"co*py) n. [Cf. F. ophthalmoscopie.]
1. A branch of physiognomy which deduces the knowledge of a person's temper and character from the
appearance of the eyes.
2. Examination of the eye with the ophthalmoscope.
(Oph*thal"my) n. Same as Ophthalmia.
(O`pi*an"ic) a. [From Opium.] (Chem.) Of, pertaining to, or designating, an organic acid obtained
by the oxidation of narcotine.
(O"pi*a*nine) n. (Chem.) An alkaloid found in small quantity in opium. It is identical with
(O"pi*a*nyl), n. [Opianic + - yl.] (Chem.) Same as Meconin.
(O"pi*ate) n. [From Opium: cf.F. opiat.]
1. Originally, a medicine of a thicker consistence than sirup, prepared with opium. Parr.
2. Any medicine that contains opium, and has the quality of inducing sleep or repose; a narcotic.
3. Anything which induces rest or inaction; that which quiets uneasiness.
They chose atheism as an opiate.Bentley.
(O"pi*ate), a. [See Opium.] Inducing sleep; somniferous; narcotic; hence, anodyne; causing rest,
dullness, or inaction; as, the opiate rod of Hermes. Milton.
(O"pi*ate) v. t. To subject to the influence of an opiate; to put to sleep. [R.] Fenton.