The Collaborative International Dictionary of English v.0.48:

Quinquarticular \Quin`quar*tic"u*lar\, a. [Quinque- + article.]
   (Theol.)
   Relating to the five articles or points; as, the
   quinquarticular controversy between Arminians and Calvinists.
   [Obs.] --Bp. Sanderson.
   [1913 Webster]