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...

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..

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

Phantasmagoria :: Phantasmagoria (n.) An optical effect produced by a magic lantern. The figures are painted in transparent colors, and all the rest of the glass is opaque black. The screen is between the spectators and the instrument, and the figures are often made to appear as in motion, or to merge into one another..

Autoptical :: Autoptical (a.) Seen with one's own eyes; belonging to, or connected with, personal observation; as, autoptic testimony or experience..

Thaumatrope :: Thaumatrope (n.) An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn.

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..

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

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

Enorthotrope :: Enorthotrope (n.) An optical toy; a card on which confused or imperfect figures are drawn, but which form to the eye regular figures when the card is rapidly revolved. See Thaumatrope..

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

Anorthoscope :: Anorthoscope (n.) An optical toy for producing amusing figures or pictures by means of two revolving disks, on one of which distorted figures are painted..

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

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..

Aperture :: Aperture (n.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture..

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

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..

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

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

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

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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