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 lens is as below...

Couching :: Couching (n.) The operation of putting down or displacing the opaque lens in cataract.

Glass :: Glass (v. t.) A hard, brittle, translucent, and commonly transparent substance, white or colored, having a conchoidal fracture, and made by fusing together sand or silica with lime, potash, soda, or lead oxide. It is used for window panes and mirrors, for articles of table and culinary use, for lenses, and various articles of ornament..

Variation :: Variation (n.) Change of termination of words, as in declension, conjugation, derivation, etc..

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..

Fall :: Fall (n.) Lapse or declension from innocence or goodness. Specifically: The first apostasy; the act of our first parents in eating the forbidden fruit; also, the apostasy of the rebellious angels..

Myopia :: Myopia (n.) Nearsightedness; shortsightedness; a condition of the eye in which the rays from distant object are brought to a focus before they reach the retina, and hence form an indistinct image; while the rays from very near objects are normally converged so as to produce a distinct image. It is corrected by the use of a concave lens..

Smallage :: Smallage (n.) A biennial umbelliferous plant (Apium graveolens) native of the seacoats of Europe and Asia. When deprived of its acrid and even poisonous properties by cultivation, it becomes celery..

Specular :: Specular (a.) Assisting sight, as a lens or the like..

Graphoscope :: Graphoscope (n.) An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones..

Astigmatism :: Astigmatism (n.) A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision..

Theme :: Theme (n.) A noun or verb, not modified by inflections; also, that part of a noun or verb which remains unchanged (except by euphonic variations) in declension or conjugation; stem..

Aberration :: Aberration (n.) The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; called spherical aberration, when due to the spherical form of the lens or mirror, such form giving different foci for central and marginal rays; and chromatic aberration, when due to different refrangibilities of the colored rays of the spectrum, those of each color having a distinct focus..

Sunglow :: Sunglass (n.) A convex lens of glass for producing heat by converging the sun's rays into a focus.

Declension :: Declension (n.) Act of courteously refusing; act of declining; a declinature; refusal; as, the declension of a nomination..

Broadcloth :: Broadcloth (n.) A fine smooth-faced woolen cloth for men's garments, usually of double width (i.e., a yard and a half); -- so called in distinction from woolens three quarters of a yard wide..

Lens :: Lens (n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure..

Cataract :: Cataract (n.) An opacity of the crystalline lens, or of its capsule, which prevents the passage of the rays of light and impairs or destroys the sight..

Dioptrics :: Dioptrics (n.) The science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and esp. through different lenses; -- distinguished from catoptrics, which refers to reflected light..

Flexion :: Flexion (n.) Syntactical change of form of words, as by declension or conjugation; inflection..

Collimator :: Collimator (n.) A tube having a convex lens at one end and at the other a small opening or slit which is at the principal focus of the lens, used for producing a beam of parallel rays; also, a lens so used..

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