Revolve

To turn or roll round on, or as on, an axis, like a wheel; to rotate, -- which is the more specific word in this sense.

To move in a curved path round a center; as, the planets revolve round the sun.

To pass in cycles; as, the centuries revolve.

To return; to pass.

To cause to turn, as on an axis.

Hence, to turn over and over in the mind; to reflect repeatedly upon; to consider all aspects of.