Source : Webster's Revised Unabridged Dictionary (1913)

Pernancy \Per"nan*cy\, n. [OF. prenance, fr. prendre, prenre,
   penre, to take, L. prendere, prehendere.] (Law)
   A taking or reception, as the receiving of rents or tithes in
   kind, the receiving of profits. --Blackstone.