Pronunciation: (di-pres'unt),[key] —adj. 1. Med.having the quality of depressing or lowering the vital activities; sedative.
2. causing a lowering in spirits; dejecting.
3. causing a drop in value; economically depressing.
—n. 1. Med.a sedative. Cf. stimulant (def. 1).
2. Chem.any agent capable of diminishing a specific property of a substance.