Aucune définition officielle pour le moment...
A hollow, usually spheroidal rock with crystals lining the inside wall. [French géode, from Latin ge d s, a precious stone, from Greek, earthlike : g , earth + - d s, ...
http://www.thefreedictionary.com/geode
a nodule of stone having a cavity lined with crystals or mineral matter. 2. : the cavity in a geode. See geode defined for kids » ...
http://www.thefreedictionary.com/geode
Géode : Une géode est une cavité d'origine pathologique (survenant à la suite d' une ... Lire la suite >
http://www.merriam-webster.com/dictionary/geode
Geodes (Greek ?????? - ge-?d?s, "earthlike") are geological secondary structures which occur in certain sedimentary and volcanic rocks. Geodes are ...
http://www.merriam-webster.com/dictionary/geode
géode, définition du mot géode dans le dictionnaire. Définition : Pierre creuse tapissée intérieurement...
http://www.vulgaris-medical.com/encyclopedie-medicale/geode
A lesson on geodes for children, with many photos. Includes amethyst, celestite, quartz and agate.
http://www.vulgaris-medical.com/encyclopedie-medicale/geode