2. (v. i.) To move in a curved path round a center; as, the planets revolve round the sun.
3. (v. i.) To pass in cycles; as, the centuries revolve.
4. (v. i.) To return; to pass.
5. (v. t.) To cause to turn, as on an axis.
6. (v. t.) Hence, to turn over and over in the mind; to reflect repeatedly upon; to consider all aspects of.