lu·​nar | \ ˈlü-nər How to pronounce lunar (audio) 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 Chang'e 5 is the latest mission in the Chang'e program of robotic lunar exploration, which is named after a moon goddess in Chinese mythology. Mike Wall, Scientific American, "China’s Chang’e 5 Lands on Moon to Collect Fresh Samples," 1 Dec. 2020 There is some speculation that the announcement might relate to water, or water vapor – which could be used during lunar exploration, Forbes said. Doyle Rice, USA TODAY, "NASA to announce 'an exciting new discovery about the moon' on Monday," 26 Oct. 2020 Aldrin is one of four moon walkers still alive from the 12 who stepped foot on the lunar surface during the Apollo program. al, "Buzz Aldrin gets COVID vaccine: Oldest astronaut to walk on moon now 91," 21 Jan. 2021 Should all go well, before the end of 2020, China will have the first new samples of lunar rock returned to Earth in more than four decades. Eric Berger, Ars Technica, "China releases a super-clear image of the Moon taken by Chang’e 5 probe," 2 Dec. 2020 The agency plans to ship the booster to the Kennedy Space Center in Florida for an unpiloted maiden test flight and has long-term plans to send astronauts to the lunar surface on the rocket's third flight. William Harwood, CBS News, "Massive moon rocket test firing aborted after early engine shutdown," 16 Jan. 2021 Queqiao was launched in May 2018, and Chang’e-4 reached the lunar surface in January 2019. Anil Ananthaswamy, Scientific American, "Telescopes on Far Side of the Moon Could Illuminate the Cosmic Dark Ages," 15 Jan. 2021 The heavy lift rocket will ferry payloads and crew to the lunar surface and beyond. Jennifer Leman, Popular Mechanics, "LIVE: Watch Blue Origin Launch Its New Shepard Rocket," 14 Jan. 2021 This water could be used as a resource during upcoming missions -- like NASA's return of humans to the lunar surface through the Artemis program. Ashley Strickland, CNN, "The year 2020 in space discoveries," 24 Dec. 2020

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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Time Traveler for lunar

Time Traveler

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

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Statistics for lunar

Last Updated

17 Feb 2021

Cite this Entry

“Lunar.” Dictionary, Merriam-Webster, Accessed 25 Feb. 2021.

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More Definitions for lunar



English Language Learners Definition of lunar

: of or relating to the moon


lu·​nar | \ ˈlü-nər How to pronounce lunar (audio) \

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

More from Merriam-Webster on lunar

Nglish: Translation of lunar for Spanish Speakers

Britannica English: Translation of lunar for Arabic Speakers

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