moon·​dust | \ ˈmün-ˌdəst How to pronounce moondust (audio) \

Definition of moondust

: fine dry particles of the moon's soil

Examples of moondust in a Sentence

Recent Examples on the Web Perhaps the program’s true legacy is etched not in moondust but in silicon. Stephen Witt, WIRED, "Apollo 11: Mission Out of Control," 24 June 2019 With almost no fuel to spare, the lander dropped, in slow motion, to kiss the surface upright, and the particles of moondust hung suspended in the sunlight until the gentle lunar gravity pulled them back to rest. Stephen Witt, WIRED, "Apollo 11: Mission Out of Control," 24 June 2019 More recently, Chen has made thin moondust mirrors that can be reshaped by actuators on the back surface to compensate for temperature changes and for gravity as the mirror moves. Daniel Clery, Science | AAAS, "Could humanity’s return to the moon spark a new age of lunar telescopes?," 18 July 2019 The 15-ton lunar module is being swallowed by the thick layer of moondust like a stone dropped in quicksand. Daniel Oberhaus, WIRED, "Lunar Mysteries That Science Still Needs to Solve," 16 July 2019 The world couldn’t wait to see what the astronauts brought home — mysterious moondust and ancient rocks. Washington Post, "Messages and mementos from Earth started with the Apollo 11 mission 50 years ago.," 2 July 2019 In that case, in 2016, a federal judge in Wichita ruled that the government had to return to a local woman, Nancy Carlson, a NASA bag that was used to collect lunar samples, which turned out to contain moondust. Cyrus Farivar, Ars Technica, "Woman: Neil Armstrong gave me moondust; I don’t want NASA to take it away," 13 June 2018 Why devote your spare time — and garage space — to gathering moondust? Vince Beiser, WIRED, "Moondust Miners Dig for $250,000 in NASA Prize Money," 27 Aug. 2007

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'moondust.' 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 moondust

1905, in the meaning defined above

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The first known use of moondust was in 1905

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Cite this Entry

“Moondust.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2020.

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