[re.ju.ve.nate] vb -nat.ed ; -nat.ing [re- + L juvenis young--more at young] vt (1807) 1 a: to make young or youthful again: give new vigor to b: to restore to an original or new state "~ old cars"
2. a: to stimulate (a stream) to renewed erosive activity esp. by uplift b: to develop youthful features of topography in ~ vi: to cause or undergo rejuvenescence syn see renew -- re.ju.ve.na.tion n -- re.ju.ve.na.tor n