1. Marked with, or divided into, degrees; divided into grades.

2. <zoology> 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, a combination of metallic and rubber springs.

(01 Mar 1998)