impactor

noun

im·​pac·​tor im-ˈpak-tər How to pronounce impactor (audio)
variants or impacter
1
: a machine (such as a steam or air hammer or a pile driver) or part that operates by striking blows
2

Examples of impactor in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Asteroid:Small 'imminent impactor' asteroid targeting Earth expected to produce 'nice fireball' Another asteroid to fly by Earth Another asteroid, known as 2020 XR, was due to fly by Earth Wednesday, according to NASA's Jet Propulsion Laboratory. Eric Lagatta, USA TODAY, 4 Dec. 2024 The first imminent impactor this year was a 3.3-foot-wide rock named 2024 BX1, which burned up over Berlin in January, followed by 2024 RW1 over the Philippines on September 4 and 2024 UQ over Hawaii on October 22, which had only been spotted two hours before its arrival. Mark R. Weaver, Newsweek, 4 Dec. 2024 The Chicxulub impactor struck a carbonate platform on Earth, which released sulfur into the atmosphere. Ashley Strickland, CNN, 22 Oct. 2024 Even so, these are early days in finding such impactors. Bruce Dorminey, Forbes, 21 Oct. 2024 See all Example Sentences for impactor 

Word History

First Known Use

1872, in the meaning defined at sense 1

Time Traveler
The first known use of impactor was in 1872

Dictionary Entries Near impactor

Cite this Entry

“Impactor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impactor. Accessed 30 Dec. 2024.

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