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Meaning of thunderegg | Babel Free

Noun CEFR B2

Definitions

A roughly spherical, nodule-like geological structure, similar to a geode, that is formed within a rhyolitic lava flow.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

Thunderer thunderfish thunderflash thunderfly thundergod thundergust

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