Skip to main content
optical

optical

76 4.4
Relating to the eye, to seeing, or to the use of light in science
  • adjective
  • /ˈɑːptɪkəl/
  • Specialized
translation icon : óptico
  • Follow up work by both radio and optical astronomers pinpointed the source.
  • optical fiber
  • optical instrument
  • optical system

So that's known as OCR, optical character recognition, I think.

Autoplay Next

Examples

  • Each of these little things are optical elements, little mirrors, lenses.

  • We make the biggest optical mirror ever built.

  • And so this is the cut off of the optical system here.

  • We should do an optical test to make sure.

  • What is the period of optical radiation, say from blue to red?

  • The boom to the right contains the optical and particle sensors, including the camera.

    Academic text (1990)
  • The resolution with an optical microscope was not good enough.

  • We have very high-powered optical detection equipment.

  • So that's known as OCR, optical character recognition, I think.

  • The optical properties of the lens enhance its ability to focus light.

Synonyms

visual
vsoptical
492 3.3

About seeing or things you can see

adds scientific emphasis on light use beyond just visible appearance
optic
vsoptical
  • Specialized
28 6.0

Relating to the eye or seeing

includes both vision and also the use of light in science or technology
ocular
vsoptical
15 6.8

About the eyes and how you see

covers vision plus technological use of light rather than only anatomy
photonic
vsoptical
  • Specialized
9 7.4

About light and how people use it in technology and science

broader in scope by also referring to vision and eye-related meaning

Compounds

An image that tricks your eyes into seeing something not real

optical scanner
  • Specialized
2 3.8

A machine that reads printed pages and saves them as computer files

optical telescope
  • Specialized
2 3.8

A machine with lenses or mirrors that gathers and focuses visible light to see distant stars and planets

optical fiber
  • Specialized
1 4.2

A very thin glass or plastic thread that carries light signals to send data quickly

optical device
  • Specialized
1 4.7

A tool that uses light to make things easier to see like microscopes or cameras

optical disk
  • Specialized
1 3.7

A flat round disk that holds computer files for a laser to read

optical glass
  • Specialized
1 6.0

A clear, strong glass that lens makers use for camera and telescope lenses

optical density
  • Specialized
1 7.1

How much a material reduces the amount of light that passes through it

optical instrument
  • Specialized
1 4.1

A device with lenses or mirrors that helps you see things clearly

8.0

A disc you can erase and write many times using light and magnets to store data

optical crown
  • Specialized
9.2

A clear glass used in lenses that bends light only a little

optical crown glass
  • Specialized
7.4

Clear glass used in camera lenses that bends light less and keeps colours from separating

optical flint
  • Specialized
9.2

A type of glass that bends light strongly and separates colors in lenses and prisms

optical aberration
  • Specialized
7.4

A fault in a lens or mirror that makes images look unclear

optical bench
  • Specialized
7.5

A long fixed bar that holds lenses and mirrors for experiments

optical condenser
  • Specialized
6.5

A lens that focuses light onto an object in a microscope

optical fusion
  • Specialized
7.0

The brain joins the images from both eyes into one view

optical prism
  • Specialized
5.5

A clear triangular piece of glass that bends light into a rainbow of colors

optical pyrometer
  • Specialized
8.8

A tool that measures very high temperatures by comparing a hot object's light color to a known value

9.9

A system that sends messages over long distances using towers with moving arms or lights

optical isomer
  • Specialized
9.7

One of two chemicals that are mirror images like left and right hands and turn polarized light opposite ways

optical lens
  • Specialized
3.9

A curved piece of clear glass or plastic that focuses light in cameras and microscopes

optical maser
  • Archaic
8.2

A device that makes a very strong single-color beam of light

optical opacity
  • Specialized
7.4

How much a material does not let light pass through it

optical phenomenon
  • Specialized
6.8

A thing you see when light moves in a special way, like a rainbow or mirage

How Visual

optical
  • Specialized
76 4.4
visual
492 3.3
nonoptical
  • Specialized
7.0
nonvisual
7.2

Surface Forms

optical positive

Morphology

optical = optic (transparent) = optic + al

The adjective is a regular -al derivative of 'optic', so the meaning relating to vision/light is directly predictable.

Etymology

Optical comes from the old Greek root opt-, which means 'eye' or 'sight'. You can see the same root in optic and optician, so optical is about the eye, seeing, or the way light works.