— colluvial , adj.
/keuh looh"vee euhm/ , n. , pl. colluvia /-vee euh/ , colluviums . Geol.
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.
[ 1935-40; colluv-, base of colluere to wash out (see COLLUTORY) + -ium -IUM, on the model of L alluvium ALLUVIUM, diluvium DELUGE ]