re·ju·ve·nate [ ri jvə nàyt ](past and past participlere·ju·ve·nat·ed, present participlere·ju·ve·nat·ing, 3rd person present singularre·ju·ve·nates)
transitive verb
Definition:
1. make somebody young again: to make somebody become, feel, or appear young again
2. return something to original condition: to restore something to its condition when new, or make it more vigorous, dynamic, and effective
3. geology cause river to erode more: to cause a river to start eroding the land it runs over again, usually as a result of the land being uplifted
4. geology make area develop topographically young features: to cause the redevelopment of younger, more rugged topographic features in a landscape through increased erosion
[Early 19th century. <re- + Latin juvenis "young"]