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zodiacal light

noun
1.
a luminous tract in the sky, seen in the west after sunset or in the east before sunrise and thought to be the light reflected from a cloud of meteoric matter revolving round the sun.
Origin
1725-1735
1725-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for zodiacal light
  • If you watch closely, you might see the zodiacal light, a faint triangle of light extending up from the horizon.
  • That's called the zodiacal light, and is caused by the reflection of sunlight by dust in the plane of our solar system.
  • The zodiacal light-the faint glow of sunlight reflected off interplanetary dust-is easiest to see about now.
British Dictionary definitions for zodiacal light

zodiacal light

noun
1.
a very faint cone of light in the sky, visible in the east just before sunrise and in the west just after sunset. It is probably due to the reflection of sunlight from cosmic dust in the plane of the ecliptic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for zodiacal light
noun
Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
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zodiacal light in Science
zodiacal light
  (zō-dī'ə-kəl)   
A faint hazy cone of light, often visible in the west just after sunset or in the east just before sunrise, and elongated in the direction of the ecliptic on each side of the Sun. It is apparently caused by the reflection of sunlight from meteoric particles in the plane of the ecliptic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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20
22
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