疏松 shūsōng loose Origin Definitions Defs Strokes Stroke Words Sentences Sents 骨质疏松症 gǔzhìshūsōngzhèng osteoporosis A medical condition where bones become brittle and fragile from loss of tissue.骨质疏松 gǔzhìshūsōng osteoporosis medical condition in which the bones become brittle and fragile; osteoporosis