thunderegg
thunderegg · thundereggs
A roughly spherical, nodule-like geological structure, similar to a geode, that is…A roughly spherical, nodule-like geological structure, similar to a geode, that is formed within a rhyolitic lava flow.
Meaning
1 sensesA roughly spherical, nodule-like geological structure, similar to a geode, that is formed within a rhyolitic lava flow.
Origin
From thunder + egg.From thunder + egg.
Wiktionary, CC BY-SA 4.0 · source
Dictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.