Source : Webster's Revised Unabridged Dictionary (1913)

Retrocede \Re"tro*cede\, v. t. [Pref. retro- + cede: cf. F.
   r['e]troc['e]der.]
   To cede or grant back; as, to retrocede a territory to a
   former proprietor.

Retrocede \Re"tro*cede\, v. i. [L. retrocedere; retro backward,
   back + cedere to go. See {Cede}.]
   To go back.