Geode
/ˈdʒiː.oʊd/noun
A rock with a hollow cavity lined with crystals or mineral material.
Did you know?Geode comes from Greek geōdēs, and the same earth-root also gives us words like geography and geology—language built from the ground up.
Etymological Timeline
Proto-Indo-European
PIE
*dʰéǵʰōm
“earth, ground”
Ancient Greek
Greek
gē
“earth, land”
Ancient Greek
Greek
gēdēs
“earth-like, earthy”
16th Century
Latin
geodes
“earth-like; earthy stone”
18th Century
English
geode
“a stone containing a cavity lined with crystals”
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