geode

[jee-ohd]
|

noun

a hollow concretionary or nodular stone often lined with crystals.
the hollow or cavity of this.
any similar formation.

Nearby words

  1. geochronometry,
  2. geocline,
  3. geocode,
  4. geocorona,
  5. geod.,
  6. geodemographics,
  7. geodesic,
  8. geodesic dome,
  9. geodesic line,
  10. geodesy

Origin of geode

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

Related formsge·od·ic [jee-od-ik] /dʒiˈɒd ɪk/, ge·od·al [jee-ohd-l] /dʒiˈoʊd l/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for geode


British Dictionary definitions for geode

geode

noun

a cavity, usually lined with crystals, within a rock mass or nodule
Derived Formsgeodic (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

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

Medicine definitions for geode

geode

[jēōd′]

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.

Science definitions for geode

geode

[jēōd′]

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.