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[loo-ner] /ˈlu nər/
of or relating to the moon:
the lunar orbit.
measured by the moon's revolutions:
a lunar month.
resembling the moon; round or crescent-shaped.
of or relating to silver.
a lunar observation taken for purposes of navigation or mapping.
Origin of lunar
1585-95; < Latin lūnāris of the moon. See Luna, -ar1
Related forms
unlunar, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for lunar
  • And people watched around the world, drawing comparisons between the first lunar landing and the mining rescue.
  • But lunar science, and lots of it, is what they are going to get.
  • lunar eclipses are much more common than solar eclipses, and many more people can see them at the same time.
  • Mysterious lunar flashes match up geographically with puffs of radon gas.
  • He creates art using moon dust, moon boots and other lunar artifacts.
  • Peppered around lava flats and mountaintops all over the moon are strange sinuous shapes known as lunar swirls.
  • They are drafting routes for manned expeditions across wide stretches of the lunar landscape.
  • Others depict cult cartoon characters, or eerie lunar landscapes.
  • The next astronauts to land on the moon will be driving an all-new lunar rover.
  • Moon rocks were placed in an aluminum storage box that was vacuum sealed on the lunar surface.
British Dictionary definitions for lunar


of or relating to the moon
occurring on, used on, or designed to land on the surface of the moon: lunar module
relating to, caused by, or measured by the position or orbital motion of the moon
of or containing silver
Word Origin
C17: from Latin lūnāris, from lūna the moon
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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Word Origin and History for lunar

"crescent-shaped," early 15c.; "pertaining to the moon," 1620s, from Old French lunaire (15c.), from Latin lunaris "of the moon," from luna "moon," (with capital L- "moon goddess"); see Luna.

Online Etymology Dictionary, © 2010 Douglas Harper
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lunar in Medicine

lunar lu·nar (lōō'nər)

  1. Relating to the moon or to a month.

  2. Lunate.

  3. Containing silver.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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lunar in Science
  1. Relating to the Moon.

  2. Measured by the revolution of the Moon around the Earth.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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