LIGHT SOURCE

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does light source mean? 

• LIGHT SOURCE (noun)
  The noun LIGHT SOURCE has 1 sense:

1. any device serving as a source of illumination

  Familiarity information: LIGHT SOURCE used as a noun is very rare.

 Dictionary entry details 

• LIGHT SOURCE (noun)

Sense 1

Meaning:

Any device serving as a source of illumination

Classified under:

Nouns denoting man-made objects

Synonyms:

light; light source

Context example:

he stopped the car and turned off the lights

Hypernyms ("light source" is a kind of...):

source of illumination (any device serving as a source of visible electromagnetic radiation)

Hyponyms (each of the following is a kind of "light source"):

night-light (light (as a candle or small bulb) that burns in a bedroom at night (as for children or invalids))

torch (a light usually carried in the hand; consists of some flammable substance)

theater light (any of various lights used in a theater)

strip lighting (light consisting of long tubes (instead of bulbs) that provide the illumination)

running light; sidelight (light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow)

searchlight (a light source with reflectors that projects a beam of light in a particular direction)

sconce (a candle or flaming torch secured in a sconce)

room light (light that provides general illumination for a room)

panel light (a light to illuminate an instrument panel)

anchor light; riding lamp; riding light (a light in the rigging of a ship that is riding at anchor)

navigation light (light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip)

jacklight (a light used as a lure in hunting or fishing at night)

houselights (lights that illuminate the audience's part of a theater or other auditorium)

headlamp; headlight (a powerful light with reflector; attached to the front of an automobile or locomotive)

flood; flood lamp; floodlight; photoflood (light that is a source of artificial illumination having a broad beam; used in photography)

fairy light (a small colored light used for decoration (especially at Christmas))

blinker; flasher (a light that flashes on and off; used as a signal or to send messages)

 Context examples 

The pictures are made by a computer linked to the light source.

(OCT, NCI Dictionary)

A device, with a light source, which allows the clear visualization of the structure of the eye at any depth, in order to detect abnormalities within the eye.

(Ophthalmoscope, NCI Thesaurus)

An exam of the inside of the back of the eye using an ophthalmoscope (a flashlight-sized instrument with a light source and a set of rotating lenses).

(Direct ophthalmoscopy, NCI Dictionary)

The appearance of objects (or light sources) described in terms of a person's perception of their hue and lightness (or brightness) and saturation.

(Color, NCI Thesaurus)

It is the luminous intensity in a given direction of a small monochromatic light source at 540 terahertz emitting 1/683 watt per steradian in that direction.

(Candela, NCI Thesaurus)

Generated by some of the most energetic processes in the universe, these X-ray sources are rare compared to the many visible light sources in the background image.

(NASA Satellite Spots a Mystery That's Gone in a Flash, The Titi Tudorancea Bulletin)

Streetlights, store front neon signs, and other light sources can suppress the sleep hormone melatonin and the natural 24-hour light-dark cycle of circadian rhythms.

(Sleeping with artificial light at night associated with weight gain in women, National Institutes of Health)

For a light source, they used a compact blue laser diode that was powered by 3 AAA batteries.

(Smartphone microscope detects nanoparticles and viruses, NIH)