clumping /ˈklʌmpɪŋ/ noun2 •A clump or cluster.BMP-2 and BMP-4 also induce the expression of the neurotrophin receptor, TrkC, in cultured crest-derived cells and induce the cells to coalesce into ganglion-like clumpings. — 2006 •The sound of walking with heavy footfalls.Heavy backstair clumpings announce huge Ab, my negro paddler. — 1916 formsclumpings
