light pollution definition, light pollution meaning | English dictionary

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light pollution


      n   the glow from street and domestic lighting that obscures the night sky and hinders the observation of faint stars  
English Collins Dictionary - English Definition & Thesaurus  
light          [1]  
1    the medium of illumination that makes sight possible  
2      (Also called)    visible radiation   electromagnetic radiation that is capable of causing a visual sensation and has wavelengths from about 380 to about 780 nanometres  
3    not in technical usage   electromagnetic radiation that has a wavelength outside this range, esp. ultraviolet radiation  
ultraviolet light     
4    the sensation experienced when electromagnetic radiation within the visible spectrum falls on the retina of the eye  
   Related prefix       photo-  
5    anything that illuminates, such as a lamp or candle  
6       See       traffic light  
7    a particular quality or type of light  
a good light for reading     
a    illumination from the sun during the day; daylight  
b    the time this appears; daybreak; dawn  
9    anything that allows the entrance of light, such as a window or compartment of a window  
10    the condition of being visible or known (esp. in the phrases bring or come to light)  
11    an aspect or view  
he saw it in a different light     
12    mental understanding or spiritual insight  
13    a person considered to be an authority or leader  
14    brightness of countenance, esp. a sparkle in the eyes  
a    the act of igniting or kindling something, such as a cigarette  
b    something that ignites or kindles, esp. in a specified manner, such as a spark or flame  
c    something used for igniting or kindling, such as a match  
16       See       lighthouse  
a    the effect of illumination on objects or scenes, as created in a picture  
b    an area of brightness in a picture, as opposed to shade  
18       a poetic or archaic word for       eyesight  
19    the answer to a clue in a crossword  
20    in (the) light of   in view of; taking into account; considering  
21    light at the end of the tunnel   hope for the ending of a difficult or unpleasant situation  
22    out like a light   quickly asleep or unconscious  
23    see the light  
a    to gain sudden insight into or understanding of something  
b    to experience a religious conversion  
24    see the light (of day)  
a    to come into being  
b    to come to public notice  
25    shed (or throw) light on   to clarify or supply additional information on  
26    stand in a person's light   to stand so as to obscure a person's vision  
27    strike a light  
a    vb   to ignite something, esp. a match, by friction  
b    interj     (Brit)   an exclamation of surprise  
28    full of light; well-lighted  
29    (of a colour) reflecting or transmitting a large amount of light  
light yellow         Compare       medium       2       dark       2  
30      (Phonetics)   relating to or denoting an (l) pronounced with front vowel resonance; clear  
the French ``l'' is much lighter than that of English         Compare       dark       9  
      vb   , lights, lighting, lighted, lit  
31    to ignite or cause to ignite  
32    often foll by: up   to illuminate or cause to illuminate  
33    to make or become cheerful or animated  
34    tr   to guide or lead by light,   (See also)        lights   1       light up  
     (Old English leoht; related to Old High German lioht, Gothic liuhath, Latin lux)  
  lightish      adj  
  lightless      adj  

English Collins Dictionary - English Definition & Thesaurus  




1    blaze, brightness, brilliance, effulgence, flash, glare, gleam, glint, glow, illumination, incandescence, lambency, luminescence, luminosity, lustre, phosphorescence, radiance, ray, refulgence, scintillation, shine, sparkle  
2    beacon, bulb, candle, flare, lamp, lantern, lighthouse, star, taper, torch, windowpane  
3    broad day, cockcrow, dawn, daybreak, daylight, daytime, morn     (poetic)   morning, sun, sunbeam, sunrise, sunshine  
4      (figurative)   angle, approach, aspect, attitude, context, interpretation, point of view, slant, vantage point, viewpoint  
5    awareness, comprehension, elucidation, explanation, illustration, information, insight, knowledge, understanding  
6    example, exemplar, guiding light, model, paragon, shining example  
7    flame, lighter, match  
8    bring to light      disclose, discover, expose, reveal, show, uncover, unearth, unveil  
9    come to light      appear, be disclosed, be discovered, be revealed, come out, transpire, turn up  
10    in (the) light of      bearing in mind, because of, considering, in view of, taking into account, with knowledge of  
11    shed or throw light on      clarify, clear up, elucidate, explain, simplify  
12    aglow, bright, brilliant, glowing, illuminated, luminous, lustrous, shining, sunny, well-lighted, well-lit  
13    bleached, blond, faded, fair, light-hued, light-toned, pale, pastel  
14    fire, ignite, inflame, kindle, set a match to, torch  
15    brighten, clarify, floodlight, flood with light, illuminate, illumine, irradiate, lighten, light up, put on, switch on, turn on  
16    animate, brighten, cheer, irradiate, lighten  
,       n   cloud, dark, darkness, dusk, mystery, obscurity, shade, shadow  
      adj   dark, deep, dim, dusky, gloomy  
      vb   cloud, darken, douse, dull, extinguish, put out, quench  

English Collins Dictionary - English synonyms & Thesaurus  

See also:

light, light, light, Light

Collaborative Dictionary     English Definition
vintage light on police car, i.e. a single dome with rotating lights inside. Thus nicknamed because of it's resemblance with bubblegum machines.
[US];[Coll.] Syn. bubble gum machine, gumball machine.
light snowfall during spring
A specific technical worksheet tool with performer's requirements. Excellent start of negotiations between performers, managers and contractors. (These requirements might include sound and light conditions for the show, food lodging and transportation of artistic talents)
1) Light sesame seed oil 2) Sesame seeds from Hindi jingali
having a changeable luster or color with an undulating narrow band of white light
sleep for a short period of time, have a light sleep
The specular reflection of light from the surface of an eye in a photograph visible as a bright white spot on the eye.
The separate lights of the studio flash kit should be positioned so that the portrait exhibits only one catchlight per eye.
to look for or expose information about a person's past, usually bad, and to therefore bring that person down or put them in a bad light
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