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Meaning of colluvium

col•lu•vi•um

Pronunciation: (ku-l'vē-um), [key]
— pl. -vi•a -vi•ums.
  1. loose earth material that has accumulated at the base of a hill, through the action of gravity, as piles of talus, avalanche debris, and sheets of detritus moved by soil creep or frost action.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.