ponderosity n the property of being large in mass Usage(s) Genuine weight, ponderosity even, is lent to this manifesto by the . To this titanic task German-born Paul Tillich brought a Teutonic ponderosity in Volume I, published six years ago. Hers was feminine intelligence at its keenest, and many a masculine ponderosity drew her inner smile. Synonym(s) heft heftiness massiveness ponderousness