thunder egg

noun

: chalcedony in rounded concretionary nodules

Illustration of thunder egg

Illustration of thunder egg
  • 1 nodule
  • 2 cutaway

Word History

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of thunder egg was in 1941

Dictionary Entries Near thunder egg

thundercrack

thunder egg

thunderfish

See More Nearby Entries 

Cite this Entry

“Thunder egg.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thunder%20egg. Accessed 19 Apr. 2024.

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