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tuned mass damper

American  
[toond mas damp-er] / ˈtund ˈmæs ˈdæmp ər /

noun

plural

tuned mass dampers

  1. a device installed in a building or other structure that absorbs and dissipates vibrations that would otherwise damage the structure.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.