pyroclastic

py ro clas tic |ˌpīrōˈklastik ˌpaɪroʊˈklæstɪk |Geology ▶adjective relating to, consisting of, or denoting fragments of rock erupted by a volcano. DERIVATIVES py ro clast |ˈpīrōˌklast |noun

pyroclastic flow

py ro clas tic flow ▶noun Geology a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing downslope at great speed.

pyroclastic

pyroclastic |ˌpʌɪrə (ʊ )ˈklastɪk |Geology ▶adjective relating to, consisting of, or denoting fragments of rock erupted by a volcano. ▶plural noun (pyroclastics ) pyroclastic fragments. DERIVATIVES pyroclast noun

pyroclastic flow

pyro |clas ¦tic flow ▶noun Geology a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.