Rĕ'/tro-çĕs'/sion or Rĕt'/ro-çĕs'/sion, n.
(-sĕsh'/un), n. [Fr. rétrocession, Sp. retrocesion, It. retrocessione, Lat. retrocessus, from retrocedere. See supra.]
Sense 1. The act of retroceding.
Sense 2. The state of being retroceded or granted back.