- 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
Words nearby light
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
Origin of light2
Other definitions for light (3 of 3)
Origin of light3
How to use light in a sentence
For example, you could make a routine that turns off your lights, plays relaxing music, and locks your doors when you say, “Alexa, goodnight.”
They were each sent a package with a laptop, microphone, ring light, and high resolution camera to shoot themselves during the show—essentially serving as their own directors for the night.The virtual Emmys could give a much-needed jolt to the fading awards show|Adam Epstein|September 17, 2020|Quartz
Before news of the coach firings came, Ingalls said the whole experience has shed light on the need for more oversight and training for school coaches.School Sports Became ‘Clubs’ Amid the Pandemic – Now Two Coaches Are Out|Ashly McGlone|September 17, 2020|Voice of San Diego
Formed by different salinity and temperature layers within the water, the SOFAR channel is a horizontal layer that acts as a wave guide, guiding sound waves in much the same way that optical fibers guide light waves, Wu says.Underwater earthquakes’ sound waves reveal changes in ocean warming|Carolyn Gramling|September 17, 2020|Science News
Sometimes they’ll change their recommendations as new evidence comes to light.Want to fight climate change effectively? Here’s where to donate your money.|Sigal Samuel|September 17, 2020|Vox
You just travel light with carry-on luggage, go to cities that you love, and get to hang out with all your friends.Coffee Talk with Fred Armisen: On ‘Portlandia,’ Meeting Obama, and Taylor Swift’s Greatness|Marlow Stern|January 7, 2015|DAILY BEAST
And how we want to live our lives in light of those differences.
Gillingham tells Mary that he wants to make their lives simpler, but it sounds a little like the dying of the light.
As Randy notes, “Maybe there is a value in shining a light on this and asking the questions.”Your Husband Is Definitely Gay: TLC’s Painful Portrait of Mormonism|Samantha Allen|January 1, 2015|DAILY BEAST
In the bowl of an electric mixer, cream the butter and brown sugar until light and fluffy.Make ‘The Chew’s’ Carla Hall’s Sticky Toffee Pudding|Carla Hall|December 28, 2014|DAILY BEAST
Behold a dumpy, comfortable British paterfamilias in a light flannel suit and a faded sun hat.God and my Neighbour|Robert Blatchford
She did not need a great cook-book; She knew how much and what it took To make things good and sweet and light.
Mr. Jones swung round a large iron key he held in his hand, and light dawned upon him.Elster's Folly|Mrs. Henry Wood
Distance, the uncertain light, and imagination, magnified it to a high wall; high as the wall of China.The Giant of the North|R.M. Ballantyne
The faint candle-light glimmered on a ponderous gilded cornice, which had also sustained violence.Checkmate|Joseph Sheridan Le Fanu
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)
Medical definitions for light
Scientific definitions for light
Cultural definitions for light
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