Definition of "regulation"

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

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

(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 giving the executive the authority to do so.

1. (countable, in the singular) A numbered provision within such kind of legislation.  quotations  examples

   Quotations

   • (2) These Regulations extend to England and Wales only, subject to paragraph (3).(3) This regulation and regulation 2(h) and (v)(i) and (ii) extend to England and Wales, Scotland and Northern Ireland.

     2023, Department for Levelling Up, Housing and Communities, “Regulation 1(2)-(3)”, in Social Housing (Regulation) Act 2023 (Commencement No. 1 and Saving Provision) Regulations 2023‎, page 1

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

(genetics) Mechanism controlling DNA transcription.  examples

(medicine) Physiological process which consists in maintaining homoeostasis.  examples

In conformity with applicable rules and regulations.  quotations  examples