WordReference Random House Learner's Dictionary of American English © 2015
lu•nar /ˈlunɚ/USA pronunciation adj. [before a noun]

    Astronomyof or relating to the moon:lunar orbit; a lunar month.

Collins Concise English Dictionary © HarperCollins Publishers::

lunar /ˈluːnə/ adj
  1. of or relating to the moon
  2. occurring on, used on, or designed to land on the surface of the moon: lunar module
  3. relating to, caused by, or measured by the position or orbital motion of the moon
Etymology: 17th Century: from Latin lūnāris, from lūna the moon

'lunar' also found in these entries:

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