\Grad"u*a"ted\, a.
1. Marked with, or divided into, degrees; divided into
   grades.
2. (Zo["o]l.) 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.