/graj"ooh ay'tid/ , adj.
1. characterized by or arranged in degrees, esp. successively, as according to height, depth, or difficulty: a graduated series of lessons.
2. marked with divisions or units of measurement.
3. (of a bird's tail) having the longest feathers in the center, the others being successively shorter.
4. (of a tax) increasing along with the taxable base: a graduated income tax.
[ 1645-55; GRADUATE + -ED 2 ]