geodal

geode

[jee-ohd]
noun
1.
a hollow concretionary or nodular stone often lined with crystals.
2.
the hollow or cavity of this.
3.
any similar formation.

Origin:
1670–80; < French géode < Latin geōdēs < Greek geṓdēs earthlike. See geo-, -ode1

geodic [jee-od-ik] , geodal [jee-ohd-l] , adjective
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World English Dictionary
geode (ˈdʒiːəʊd)
 
n
a cavity, usually lined with crystals, within a rock mass or nodule
 
[C17: from Latin geōdēs a precious stone, from Greek: earthlike; see geo-, -ode1]
 
geodic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

geode
1676, from Fr. géode, from L. geodes, from Gk. geodes "earthy, earth-like," from ge "earth" (Homeric gaia), a word of pre-I.E. origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

geode ge·ode (jē'ōd')
n.
A cystlike space with or without an epithelial lining, usually observed in subarticular bone in arthritic disorders.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
geode   (jē'ōd')  Pronunciation Key 
A small, hollow, usually rounded rock lined on the inside with inward-pointing crystals. Geodes form when mineral-rich water entering a cavity in a rock undergoes a sudden change in pressure or temperature, causing crystals to form from the solution and line the cavity's walls.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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