出典:Wiktionary
出典:『Wiktionary』 (2025/03/18 17:24 UTC 版)
From French géode, from Latin geōdēs, from Ancient Greek γεώδης (geṓdēs, “earthlike”), equivalent to γῆ (gê, “earth”) + -ώδης (-ṓdēs).
出典:Wikipedia
出典:『Wikipedia』 (2011/05/13 19:20 UTC 版)
Geodes (Greek γεώδης - ge-ōdēs, "earthlike") are geological rock formations which occur in sedimentary and certain volcanic rocks. Geodes are essentially rock cavities or vugs with internal crystal formations or concentric banding. The exterior of the most common geodes is generally limestone or a related rock, while the interior contains quartz crystals and/or chalcedony deposits. Other geodes are completely filled with crystal, being solid all the way through. These types of geodes are called nodules.
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katydids
rudds
a paste-pot
ジェロ
Jero
gorals
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