geode Hear it!

geode definition

ge·ode (jē′ōd′)

noun

  1. a globular stone having a cavity lined with inward-growing crystals or layers of silica
    1. such a cavity
    2. any formation like this

Etymology: Fr géode < L geodes, a precious stone < Gr geoidēs, earthlike < gē, earth + -eidos, -oid

Related Forms:

  • geodic ge·od′ic (-äd′ik) adjective

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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