from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Soft, thoroughly decomposed rock rich in clay and remaining in its original place.

from The Century Dictionary and Cyclopedia

  • n. In petrography, a term applied by Becker (1894) to disintegrated and more or less decomposed rock which remains in place, that is, has not been transported.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a deposit of clay and disintegrating rock that is found in its original place


Sorry, no etymologies found.



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