[ loo-ner ]
See synonyms for lunar on
  1. of or relating to the moon: the lunar orbit.

  2. measured by the moon's revolutions: a lunar month.

  1. resembling the moon; round or crescent-shaped.

  2. of or relating to silver.

  1. a lunar observation taken for purposes of navigation or mapping.

Origin of lunar

First recorded in 1585–95, lunar is from the Latin word lūnāris of the moon. See Luna, -ar1

Other words from lunar

  • un·lu·nar, adjective

Words Nearby lunar Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use lunar in a sentence

British Dictionary definitions for lunar


/ (ˈluːnə) /

  1. of or relating to the moon

  2. occurring on, used on, or designed to land on the surface of the moon: lunar module

  1. relating to, caused by, or measured by the position or orbital motion of the moon

  2. of or containing silver

Origin of lunar

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

Scientific definitions for lunar


[ lōōnər ]

  1. Relating to the Moon.

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

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.