- 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
In the Jockey ad, half of Jim Palmer's princely, brooding face is fully lighted, the other half is masked in shadow.Will the Real Jim Palmer Please Stand Up|Tom Boswell|September 27, 2014|DAILY BEAST
That same day, the high court did a 180 and green-lighted the executions.Mary Fallin’s Killer Fiasco|Michelle Cottle|May 1, 2014|DAILY BEAST
The place was quite deserted, lighted by a few lanterns hung high up, in which the gas burned dimly.Read ‘The King in Yellow,’ the ‘True Detective’ Reference That’s the Key to the Show|Robert W. Chambers|February 20, 2014|DAILY BEAST
It is small and well lighted; one sees all over it almost at a glance.Read ‘The King in Yellow,’ the ‘True Detective’ Reference That’s the Key to the Show|Robert W. Chambers|February 20, 2014|DAILY BEAST
A lighted, electronic marquee placed just outside the building scrolls Bible verses every day.The Louisiana Public School Cramming Christianity Down Students’ Throats|Andrew Cohen|January 26, 2014|DAILY BEAST
We make fast the doors of our lighted houses against the indigent and the hungry.The Unsolved Riddle of Social Justice|Stephen Leacock
Her worn-out blue petticoat is lighted up by a moonbeam; in her hand she appears to have a hoe.Women in the fine arts, from the Seventh Century B.C. to the Twentieth Century A.D.|Clara Erskine Clement
Blanche stood an instant looking into the lighted room and hesitating—flushed a little, smiling, extremely pretty.Confidence|Henry James
Goodell lighted another cigarette and nonchalantly seated himself in the vacant chair.
The first man my eyes lighted upon as I stepped inside was MacRae, humped disconsolately on the edge of a bunk.
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