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optical British & World English

Relating to sight, especially in relation to the action of light

optical axis British & World English

A line passing through the centre of curvature of a lens or spherical mirror and parallel to the axis of symmetry

optical bench British & World English

A straight rigid bar, typically marked with a scale, to which supports for lenses, light sources, and other optical components can be attached

optical fibre British & World English

A thin glass fibre through which light can be transmitted

optical glass British & World English

A very pure kind of glass used for lenses

optical path British & World English

The distance which in a vacuum would contain the same number of wavelengths as the actual path taken by a ray of light

magneto-optical British & World English

Relating to or employing both optical and magnetic phenomena or technology

optical density British & World English

The degree to which a refractive medium retards transmitted rays of light

optical double British & World English

A group of two stars which appear to constitute a double star due to their being in the same line of sight as seen from the earth, but are actually at different distances

optical isomer British & World English

Each of two or more forms of a compound which have the same structure but are mirror images of each other and typically differ in optical activity

optical scanner British & World English

A device which performs optical character recognition and produces coded signals corresponding to the characters identified

optical activity British & World English

The property (displayed by solutions of some compounds, notably many sugars) of rotating the plane of polarization of plane-polarized light

optical brightener British & World English

A fluorescent substance added to detergents in order to produce a whitening effect on laundry

optical illusion British & World English

Something that deceives the eye by appearing to be other than it is

optical microscope British & World English

A microscope using visible light, typically viewed directly by the eye

optical rotation British & World English

The rotation of the plane of polarization of plane-polarized light by an optically active substance

optical turnstile British & World English

An access control system without barriers in which those attempting to enter are evaluated by closed-circuit television or other visual means

optical tweezers British & World English

A device that uses light from a low-wattage laser to manipulate individual molecules within cells

optical character recognition British & World English

The identification of printed characters using photoelectric devices and computer software

disk in disc British & World English

An information storage device for a computer in the shape of a round flat plate which can be rotated to give access to all parts of the surface. The data may be stored either magnetically (in a magnetic disk) or optically (in an optical disk such as a CD-ROM)

op art British & World English

A form of abstract art that gives the illusion of movement by the precise use of pattern and colour, or in which conflicting patterns emerge and overlap. Bridget Riley and Victor Vasarely are its most famous exponents

optical art in op art British & World English

A form of abstract art that gives the illusion of movement by the precise use of pattern and colour, or in which conflicting patterns emerge and overlap. Bridget Riley and Victor Vasarely are its most famous exponents

indicatrix British & World English

An imaginary ellipsoidal surface whose axes represent the refractive indices of a crystal for light following different directions with respect to the crystal axes

optical indicatrix in indicatrix British & World English

An imaginary ellipsoidal surface whose axes represent the refractive indices of a crystal for light following different directions with respect to the crystal axes

optical disk in disc British & World English

An information storage device for a computer in the shape of a round flat plate which can be rotated to give access to all parts of the surface. The data may be stored either magnetically (in a magnetic disk) or optically (in an optical disk such as a CD-ROM)

optical English-Spanish

óptico

optical disk English-Spanish

disco masculine óptico

optical fiber English-Spanish

fibra feminine óptica

optical scanner English-Spanish

lector masculine óptico, lectora

optical centring New Oxford Dictionary for Writers & Editors

positioning text on a page so that it appears to be centred though by measurement it is not

optical computer English-Spanish

computadora, ordenador

optical illusion English-Spanish

ilusión feminine óptica

optical disk drive English-Spanish

unidad feminine de disco óptica

optical fibre in optical fiber English-Spanish

fibra feminine óptica

optical character recognition in optical English-Spanish

reconocimiento masculine óptico de caracteres