Geode

//ˈd͡ʒiː.oʊd// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A nodule of stone having a cavity lined with mineral or crystal matter on the inside wall.
  2. 2
    Acronym of generic object of dark energy, a theoretical alternative to black holes; an object with an event horizon enclosing an interior composed of dark energy. abbreviation, acronym, alt-of
  3. 3
    (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals wordnet

Etymology

From French géode, from Latin geōdēs, from Ancient Greek γεώδης (geṓdēs, “earthlike”), equivalent to γῆ (gê, “earth”) + -ώδης (-ṓdēs).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.