acoustic shadow

noun

: an area where sounds from a nearby source that should normally be audible cannot be heard because of an unusual combination of factors (such as topography and wind)
During the American Civil War, observers noted a curious fact: the sounds of a battle, clearly distinguishable at ten miles, could be utterly inaudible at two. These weird wrinkles in the landscape were called "acoustic shadows."Mark Slouka, Harper's, June 2000

Word History

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of acoustic shadow was in 1830

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Dictionary Entries Near acoustic shadow

Cite this Entry

“Acoustic shadow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acoustic%20shadow. Accessed 13 Jul. 2024.

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