\Dos"age\ (d[=o]s"[asl]j), n. [Cf. F. dosage. See {Dose},
v.]
1. (Med.) The administration of medicine in doses; specif., a
   scheme or system of grading doses of medicine according to
   age, etc.

2. The process of adding some ingredient, as to wine, to give
   flavor, character, or strength.