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...

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

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

Telescope :: Telescope (n.) An optical instrument used in viewing distant objects, as the heavenly bodies..

Optical :: Optical (a.) Of or pertaining to vision or sight.

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

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

Eyepiece :: Eyepiece (n.) The lens, or combination of lenses, at the eye end of a telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed..

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..

Ocular :: Ocular (n.) The eyepiece of an optical instrument, as of a telescope or microscope..

Periscope :: Periscope (n.) an optical instrument of tubular shape containing an arrangement of lenses and mirrors (or prisms), allowing a person to observe a field of view otherwise obstructed, as beyond an obstructing object or (as in submarines) above the surface of the water..

Illuminator :: Illuminator (v. t.) A condenser or reflector of light in optical apparatus; also, an illuminant..

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..

Phoneidoscope :: Phoneidoscope (n.) An instrument for studying the motions of sounding bodies by optical means. It consists of a tube across the end of which is stretched a film of soap solution thin enough to give colored bands, the form and position of which are affected by sonorous vibrations..

Zoetrope :: Zoetrope (n.) An optical toy, in which figures made to revolve on the inside of a cylinder, and viewed through slits in its circumference, appear like a single figure passing through a series of natural motions as if animated or mechanically moved..

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

Definition :: Definition (n.) Distinctness or clearness, as of an image formed by an optical instrument; precision in detail..

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

Scioptic :: Scioptic (a.) Of or pertaining to an optical arrangement for forming images in a darkened room, usually called scioptic ball..

Stereoscopic :: Stereoscope (n.) An optical instrument for giving to pictures the appearance of solid forms, as seen in nature. It combines in one, through a bending of the rays of light, two pictures, taken for the purpose from points of view a little way apart. It is furnished with two eyeglasses, and by refraction or reflection the pictures are superimposed, so as to appear as one to the observer..

Chromascope :: Chromascope (n.) An instrument for showing the optical effects of color.

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