rejuvenate

To restore to youthful vigor or appearance; make young again.

To restore to an original or new condition.

To stimulate (a stream) to renewed erosive activity, as by uplift of the land.

To develop youthful topographic features in (a previously leveled area).

To restore the appearance, powers, or feelings of youth to; make as if young again; renew; refresh.

Of a stream, to increase its gradient, and with this, its velocity and erosive power, so that its effectiveness and apparent youth are renewed. This result is produced by the uplifting of a region which has been notably reduced by the erosion of the streams which continue to occupy it.

Of a region, to again impress the characters of youthful topography upon (it) when it is well advanced in its erosion cycle. This effect is dependent upon rejuvenation of the streams.

To render young again.

To render young again.