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skylight

 - 3 dictionary results

sky⋅light

[skahy-lahyt]
–noun
1. an opening in a roof or ceiling, fitted with glass, for admitting daylight.
2. the frame set with glass fitted to such an opening.
3. Meteorology. the diffuse light from the sky, scattered by air molecules, as distinguished from the direct radiation from the sun.

Origin:
1670–80; sky + light 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To skylight
sky·light   (skī'līt')   
n.  
  1. An overhead window, as in a roof, admitting daylight.

  2. Light from the sky.

  3. A hole in the congealed surface of a lava flow, through which flowing lava can be seen.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

skylight 
1679, "light from the sky," from sky + light (n.). Meaning "small opening in a roof to admit light" is recorded from 1690.
Online Etymology Dictionary, © 2001 Douglas Harper
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