Regulative
[regjuleitiv]
Definition
(adj.) restricting according to rules or principles; 'a regulatory gene' .
Checked by Archie--From WordNet
Definition
(a.) Tending to regulate; regulating.
(a.) 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.
Typist: Xavier