- Also called lu·mi·nous en·er·gy, radiant energy. electromagnetic radiation to which the organs of sight react, ranging in wavelength from about 400 to 700 nanometers and propagated at a speed of 186,282 miles per second (299,972 kilometers per second), considered variously as a wave, a stream of particles, or a quantum phenomenon.
- a similar form of radiant energy that does not affect the retina, as ultraviolet or infrared rays.
- the effect of light falling on an object or scene as represented in a picture.
- one of the brightest parts of a picture.
- Also called day. one compartment of a window or window sash.
- a window, especially a small one.
Idioms about light
- to come into existence or being.
- to be made public.
- to begin to accept or understand a point of view one formerly opposed: Her father was opposed to her attending an out-of-town college, but he finally saw the light.
Origin of light1
OTHER WORDS FROM lightlightful, adjectivelight·ful·ly, adverb
Other definitions for light (2 of 3)
- not heavy or strong: a light apéritif.
- (especially of beer and wine) having fewer calories and usually a lower alcohol content than the standard product.
OTHER WORDS FOR light
OPPOSITES FOR light
Origin of light2
Other definitions for light (3 of 3)
Origin of light3
How to use light in a sentence
White had been convicted of voluntary manslaughter, the lightest possible sentence for his crime.Castro Street’s Hot Cop Is the Batman to Sexy Mug Shot Guy’s Joker|Itay Hod|July 9, 2014|DAILY BEAST
Most of the atoms in a newborn star system are hydrogen, which is the lightest chemical element.Mega-Earth Is the Weirdest Exoplanet Yet|Matthew R. Francis|June 8, 2014|DAILY BEAST
His travelling companions were congenial, and his duties of the lightest—merely to give music lessons to young Shilovsky.The Life & Letters of Peter Ilich Tchaikovsky|Modeste Tchaikovsky
Then net with the smallest mesh the two lightest shades, one row of each, and two rows of the other three shades.The Ladies' Book of Etiquette, and Manual of Politeness|Florence Hartley
It was evident that every beam quivered in its mortices at the passing of the lightest vehicle.At the Sign of the Cat and Racket|Honore de Balzac
Twitchbell—inside of lightest part of Starling's quill feather for wings, brown hackle for legs, brown Peacock's herl for body.
The Black Gnat—dubbed with black mohair, the wings of the lightest part of a starling.
British Dictionary definitions for light (1 of 3)
- illumination from the sun during the day; daylight
- the time this appears; daybreak; dawn
- the act of igniting or kindling something, such as a cigarette
- something that ignites or kindles, esp in a specified manner, such as a spark or flame
- something used for igniting or kindling, such as a match
- the effect of illumination on objects or scenes, as created in a picture
- an area of brightness in a picture, as opposed to shade
- to gain sudden insight into or understanding of something
- to experience a religious conversion
- to come into being
- to come to public notice
- (verb) to ignite something, esp a match, by friction
- (interjection) British an exclamation of surprise
Derived forms of lightlightish, adjectivelightless, adjective
Word Origin for light
British Dictionary definitions for light (2 of 3)
- designed to carry light loads
- not loaded
- (of a bid) made on insufficient values
- (of a player) having failed to take sufficient tricks to make his contract
Derived forms of lightlightish, adjectivelightly, adverblightness, noun
Word Origin for light
British Dictionary definitions for light (3 of 3)
Scientific definitions for light
Cultural definitions for light
The type of electromagnetic wave that is visible to the human eye. Visible light runs along a spectrum from the short wavelengths of violet to the longer wavelengths of red. (See photon.)
Other Idioms and Phrases with light
In addition to the idioms beginning with light
- light a fire under
- light as a feather
- light at the end of the tunnel
- light dawned, the
- lighten up
- light heart
- light into
- lightning never strikes twice in the same place
- light on
- light out
- light up
- begin to see daylight (see the light of day)
- bring to light
- come to light
- go light on
- green light
- heavy (light) heart
- hide one's light
- in a good (bad) light
- in the cold light of day
- in the light of
- lace (light) into
- leading light
- make light of
- many hands make light work
- once over lightly
- out cold (like a light)
- see the light
- shed light on
- sweetness and light
- travel light
- trip the light fantastic