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brontide

[ bron-tahyd ]
/ ˈbrɒn taɪd /
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noun
a rumbling noise heard occasionally in some parts of the world, probably caused by seismic activity.
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Origin of brontide

First recorded in 2000–05; from Greek brontḗ “thunder” + -ide (for -id1)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use brontide in a sentence

  • Occasionally an apparent brontide may be due to the explosion of an unseen meteor.

    Meteorology|Charles Fitzhugh Talman
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