a.
1. Marked with, or divided into, degrees; divided into grades.
2. (Zol.) Tapered; -- said of a bird's tail when the outer feathers are shortest, and the others successively longer.
Graduated tube, bottle, cap, or glass, a vessel, usually of glass, having horizontal marks upon its sides, with figures, to indicate the amount of the contents at the several levels. -- Graduated spring (Railroads), a combination of metallic and rubber springs.