— detrital , adj.
/di truy"teuhs/ , n.
1. rock in small particles or other material worn or broken away from a mass, as by the action of water or glacial ice.
2. any disintegrated material; debris.
[ 1785-95; détritus detri-, var. s. of deterere to wear down, rub off ( de- DE- + terere to rub) + -tus suffix of v. action ]