verb (used with object), re·ju·ve·nat·ed, re·ju·ve·nat·ing.

  1. to make young again; restore to youthful vigor, appearance, etc.: That vacation has certainly rejuvenated him.
  2. to restore to a former state; make fresh or new again: to rejuvenate an old sofa.
  3. Physical Geography.
    1. to renew the activity, erosive power, etc., of (a stream) by uplift or by removal of a barrier in the stream bed.
    2. to impress again the characters of youthful topography on (a region) by the action of rejuvenated streams.

verb (used without object), re·ju·ve·nat·ed, re·ju·ve·nat·ing.

  1. to undergo rejuvenation; revive.

verb (tr)

  1. to give new youth, restored vitality, or youthful appearance to
  2. (usually passive) geography
    1. to cause (a river) to begin eroding more vigorously to a new lower base level, usually because of uplift of the land
    2. to cause (a land surface) to develop youthful features

1807, irregular formation from re- “again” + Latin juvenis (see young (adj.)) + -ate (2). Related: Rejuvenated; rejuvenating.

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