EXAMPLES | WORD ORIGIN noun a hollow concretionary or nodular stone often lined with crystals. the hollow or cavity of this. any similar formation. Origin of geode 1670–80;
-ode 1 Related forms ge·od·ic , [jee- od-ik] /dʒiˈɒd ɪk/ ge·od·al , [jee- ohd-l] /dʒiˈoʊd l/ adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for geode Historical Examples of geode
geode is a spherical and apparently solid stone, but when broken is found to be hollow and coated with crystals.
geode has a hollow cell within, lined with beautiful crystals of many colors.
No date; no place mentioned; we note the suggestion that it was only a
geode, which had been upon the ground in the first place.
geode is a hollow shell of stone, usually quartz, lined with crystals pointing toward the center. Geode, an irregular shaped stone, containing a small cavity. British Dictionary definitions for geode noun a cavity, usually lined with crystals, within a rock mass or nodule Derived Forms geodic ( dʒɪˈɒdɪk), adjective Word Origin for geode
C17: from Latin
geōdēs a precious stone, from Greek: earthlike; see geo-, -ode 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for geode n.
rounded stone with a hollow center lined with crystals, 1670s, from French
géode, from Latin geodes, from Greek geodes "earthy, earth-like," from ge "earth" (Homeric gaia; see Gaia) + -oides, adjective suffix, "characterized by." Perhaps so called in reference to the "earthy" minerals inside.
Online Etymology Dictionary, © 2010 Douglas Harper
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.
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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.