v. Obs. [f. OF. assubtilli-er (see prec.) + -ATE3.] To subtilize, refine, rarify.
1548. Vicary, Prof. Treat. or Englishm. Treas. (1641), 72. Our Quintessence doth assubtiliate the Blood.
1582. Hester, Phiorav. Secr., I. xxxviii. 45. The second operation [in gout] is to assubtiliate the grosse and rotten humors.