(uncountable) The act of regulating or the condition of being regulated.

(countable) A law or administrative rule, issued by an organization, used to guide or prescribe the conduct of members of that organization.

(law, often in the plural) A type of law made by the executive branch of a government, usually as authorized by a statute made by the legislative branch, which includes numbered provisions within such legislation.

(European Union law) A form of legislative act which is self-effecting, and requires no further intervention by the Member States to become law.

(genetics) Mechanism controlling DNA transcription.

(medicine) Physiological process which consists in maintaining homoeostasis.

In conformity with applicable rules and regulations.