\Reg"u*la*tive\ (r?g"?*l?*t?v), a.
1. Tending to regulate; regulating. --Whewell.
2. (Metaph.) Necessarily assumed by the mind as fundamental
   to all other knowledge; furnishing fundamental principles;
   as, the regulative principles, or principles a priori; the
   regulative faculty. --Sir W. Hamilton.
Note: These terms are borrowed from Kant, and suggest the
      thought, allowed by Kant, that possibly these
      principles are only true for the human mind, the
      operations and belief of which they regulate.