Graywacke


Graywacke
Graywacke Gray"wacke`, n. [G. grauwacke; grau gray + wacke wacke. See {Gray}, and {Wacke}, and cf. {Grauwacke}.] (Geol.) A conglomerate or grit rock, consisting of rounded pebbles and sand firmly united together. [1913 Webster]

Note: This term, derived from the grauwacke of German miners, was formerly applied in geology to different grits and slates of the Silurian series; but it is now seldom used. [1913 Webster]


The Collaborative International Dictionary of English. 2000.