lu·​nar | \ˈlü-nər also -ˌnär \

Definition of lunar 

1 : crescent, lunate who grasps the struggling heifer's lunar horns— Alexander Pope

2a : of, relating to, or resembling the moon lunar craters a lunar landscape

b : designed for use on the moon lunar vehicles

3 : measured by the moon's revolution lunar month

Examples of lunar in a Sentence

Recent Examples on the Web

Hu Xiaojun, a researcher at CALT, told press at the Zhuhai Airshow that the new launch vehicle is intended for future crewed spaceflight missions using China's next-generation crewed spacecraft, including lunar missions. Eric Berger, Ars Technica, "Rocket Report: SpaceX gets top clearance, Europe job cuts, Russian plans," 16 Nov. 2018 That responsiveness is on display behind him as Wallops prepares for this $280 million lunar mission—its first deep-space launch. Joe Pappalardo, Popular Mechanics, "Rocket Lab Chooses Wallops Island, Virginia as American Launch Site," 17 Oct. 2018 Musk outlined a somewhat different SpaceX lunar mission last year. Christopher Weber, The Seattle Times, "1st private moon flight passenger to invite creative guests," 17 Sep. 2018 That would shatter the out-of-this-world depth record of 8 feet (2 ½ meters) drilled by the Apollo moonwalkers nearly a half-century ago for lunar heat measurements. Marcia Dunn, The Seattle Times, "Mars revisited: NASA spacecraft days away from risky landing," 21 Nov. 2018 It will be designed to send 25 metric tons to trans-lunar injection and 70 metric tons to low-Earth orbit, SpaceNews reports. Eric Berger, Ars Technica, "Rocket Report: SpaceX gets top clearance, Europe job cuts, Russian plans," 16 Nov. 2018 The 2020 ispace mission will be considered a success if the lander achieves lunar orbit, company representatives said. Mike Wall,, "Japanese Startup ispace to Launch Moon Lander Missions on SpaceX Rockets," 26 Sep. 2018 No matter that First Man clearly shows the flag on the moon — twice, in fact — planted firmly next to the lunar landing module. Alissa Wilkinson, Vox, "The First Man controversy is grounded in partisanship, not patriotism," 13 Sep. 2018 Cicco learned something else about NASA: the space agency considers all lunar material government property and has a history of tracking down any that falls into the wrong hands. CBS News, "Tennessee woman suing NASA to keep moon dust she says Neil Armstrong gave her," 4 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lunar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lunar

15th century, in the meaning defined at sense 1

History and Etymology for lunar

Middle English, from Latin lunaris, from luna moon; akin to Latin lucēre to shine — more at light

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Statistics for lunar

Last Updated

10 Dec 2018

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The first known use of lunar was in the 15th century

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More Definitions for lunar



English Language Learners Definition of lunar

: of or relating to the moon


lu·​nar | \ˈlü-nər \

Kids Definition of lunar

1 : of or relating to the moon lunar rock

2 : measured by the revolutions of the moon a lunar month


lu·​nar | \ˈlü-nər also -ˌnär\

Medical Definition of lunar 

: lunate

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More from Merriam-Webster on lunar

Rhyming Dictionary: Words that rhyme with lunar

Spanish Central: Translation of lunar

Nglish: Translation of lunar for Spanish Speakers

Britannica English: Translation of lunar for Arabic Speakers

Comments on lunar

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a soft lustrous wool fabric with mohair

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