geode

[ jee-ohd ]

/ ˈdʒi oʊd /

Save This Word!

noun

a hollow concretionary or nodular stone often lined with crystals.

the hollow or cavity of this.

any similar formation.

QUIZ

FIRE UP YOUR VOCAB FOR A "RED" SYNONYMS QUIZ

No fire engine reds here, only a fierce collection of vibrant words for the color red to test yourself on.

Question 1 of 7

What does "amaranth" mean?

a legendary stone of impenetrable hardness

an imaginary, undying flower

a mythical creature

TAKE THE QUIZ TO FIND OUT

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar help

Improve Your Writing

Meet Grammar CoachImprove Your Writing

Origin of geode

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

OTHER WORDS FROM geode

ge·od·ic

[jee-od-ik], /dʒiˈɒd ɪk/, ge·od·al

[jee-ohd-l], /dʒiˈoʊd l/, adjective

Words nearby geode

Geocillin, geocline, geocode, geocorona, geod., geode, geodemographics, geodesic, geodesic dome, geodesic line, geodesy

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use geode in a sentence

I looked it over as if it were some strange geode, compressed as it was by time and tread.
The Strange and Mysterious Death of Mrs. Jerry Lee Lewis|Richard Ben Cramer|January 11, 2014|DAILY BEAST
For , m ync btre, gif ow sw ync, t w ac s bc on t geode wnden e w ealle gecnwan mgen.
Anglo-Saxon Grammar and Exercise Book|C. Alphonso Smith
A geode is a hollow shell of stone, usually quartz, lined with crystals pointing toward the center.
The Chautauquan, Vol. III, March 1883|The Chautauquan Literary and Scientific Circle
The entire region is an enormously large, perfectly formed, and undamaged geode.
Cave Regions of the Ozarks and Black Hills|Luella Agnes Owen

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.
The Book of the Damned|Charles Fort
Geode, an irregular shaped stone, containing a small cavity.
A Manual of the Antiquity of Man|J. P. MacLean

British Dictionary definitions for geode

geode

/ (ˈdʒiːəʊd) /

noun

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

Derived forms of geode

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

Medical definitions for geode

geode

[ jē′ōd′ ]

A cystlike space with or without an epithelial lining, usually observed in subarticular bone in arthritic disorders.

Scientific definitions for geode

geode

[ jē′ōd′ ]

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.