The Collaborative International Dictionary of English v.0.48:

Intrinsical \In*trin"sic*al\, a. [Formerly written
   intrinsecal.]
   [1913 Webster]
   1. Intrinsic.
      [1913 Webster]

   2. Intimate; closely familiar. [Obs.] --Sir H. Wotton.
      [1913 Webster]