brontide

[ bron-tahyd ]

noun

1. a rumbling noise heard occasionally in some parts of the world, probably caused by seismic activity.

Word History and Origins

Origin of brontide¹

First recorded in 2000–05; from Greek brontḗ “thunder” + -ide (for -id ¹ )

Example Sentences

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

From Project Gutenberg