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Rock with a hollow cavity
Answer for the clue "Rock with a hollow cavity ", 5 letters:
geode
Alternative clues for the word geode
Word definitions for geode in dictionaries
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
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 ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Geode \Ge"ode\ (j[=e]"[=o]d), n. [F. g['e]ode, L. geodes, fr. Gr. ? earthlike; ge`a, gh^, the earth + e'i^dos form.] (Min.) A nodule of stone, containing a cavity, lined with crystals or mineral matter. The cavity in such a nodule.
Wikipedia
Word definitions in Wikipedia
Geodes ( Greek γεώδης - ge-ōdēs , "earthlike") are geological secondary structures which occur in certain sedimentary and volcanic rocks . They are themselves of sedimentary origin formed by chemical precipitation. Geodes are essentially hollow, vaguely ...
WordNet
Word definitions in WordNet
n. (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
Usage examples of geode.
Not the least curious part of this outcrop is the black thread of iron silicate which, broken in places, subtends it to the east: some specimens have geodes yielding brown powder, and venal cavities lined with botryoidal quartz of amethystine tinge.
The music swelled in a crescendo, cube-drums, ice-horns, percussion geodes, and more, all in perfect harmony.
Quantities of quartz crystals, geodes, apache tears, jasper pebbles, moonstone beads, and….
Treasure seekers of this kind found a stone that looked like a geode in 1961 near Olancha, on the edge of the Amargosa Desert.