Source : Webster's Revised Unabridged Dictionary (1913)

Usucaption \U`su*cap"tion\ (?; 277), n. [L. usucapere,
   usucaptum, to acquire by long use; usu (ablative of usus use)
   + capere to take: cf. usucapio usucaption.] (Roman Law)
   The acquisition of the title or right to property by the
   uninterrupted possession of it for a certain term prescribed
   by law; -- the same as {prescription} in common law.