Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of optical is as below...

Optician :: Optician (a.) One who deals in optical glasses and instruments.

Anisotropic :: Anisotropic (a.) Not isotropic; having different properties in different directions; thus, crystals of the isometric system are optically isotropic, but all other crystals are anisotropic..

Strockle :: Stroboscope (n.) An optical toy similar to the phenakistoscope. See Phenakistoscope.

Stop :: Stop (n.) The diaphragm used in optical instruments to cut off the marginal portions of a beam of light passing through lenses.

Spectroscope :: Spectroscope (n.) An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance..

Synoptic :: Synoptical (a.) Affording a general view of the whole, or of the principal parts of a thing; as, a synoptic table; a synoptical statement of an argument..

Power :: Power (n.) The degree to which a lens, mirror, or any optical instrument, magnifies; in the telescope, and usually in the microscope, the number of times it multiplies, or augments, the apparent diameter of an object; sometimes, in microscopes, the number of times it multiplies the apparent surface..

Optically :: Optically (adv.) By optics or sight; with reference to optics.

Sextant :: Sextant (n.) An instrument for measuring angular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See Quadrant..

Scoptical :: Scoptical (a.) Jesting; jeering; scoffing.

Autoptically :: Autoptically (adv.) By means of ocular view, or one's own observation..

Dioptra :: Dioptra (n.) An optical instrument, invented by Hipparchus, for taking altitudes, leveling, etc..

Optical :: Optical (a.) Relating to the science of optics; as, optical works..

Microscope :: Microscope (n.) An optical instrument, consisting of a lens, or combination of lenses, for making an enlarged image of an object which is too minute to be viewed by the naked eye..

Inactose :: Inactose (n.) A variety of sugar, found in certain plants. It is optically inactive..

Define :: Define (v. t.) To determine with precision; to mark out with distinctness; to ascertain or exhibit clearly; as, the defining power of an optical instrument..

Spectacle :: Spectacle (n.) An optical instrument consisting of two lenses set in a light frame, and worn to assist sight, to obviate some defect in the organs of vision, or to shield the eyes from bright light..

Erector :: Erector (n.) An attachment to a microscope, telescope, or other optical instrument, for making the image erect instead of inverted..

Field :: Field (n.) The space covered by an optical instrument at one view.

Flint Glass :: Flint glass () A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass..

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