Definition
A rule or directive issued by a governmental authority or authorized body to govern conduct, manage procedures, or implement policy. In legal usage, the term carries two related but distinct meanings:
1. SUBSTANTIVE LEGAL INSTRUMENT. A binding rule of law issued by an administrative agency or executive body, typically pursuant to authority granted by a statute. In this sense, a regulation has the force of law — it binds the public and regulated entities just as a legislative act does. The agency's authority to issue such rules derives from enabling legislation; the regulation must stay within the scope of that delegation or it is void. Federal regulations in the United States are codified in the Code of Federal Regulations (C.F.R.).
2. THE ACT OR PROCESS OF GOVERNING. The broader activity of controlling, directing, or managing a person, industry, or activity through rules, oversight, or enforcement mechanisms. "Regulation of commerce" or "economic regulation" uses the term in this sense — referring to the regulatory scheme as a whole, not just a single rule.
In constitutional and administrative law, the two senses converge: "regulation" describes both what agencies do and the instruments they produce.
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Common Language
Modern common usage (Wiktionary): The act of regulating or the condition of being regulated; a law or administrative rule issued by an organization to guide or prescribe conduct of its members; a type of law made by the executive branch of a government, usually as authorized by a statute.
Historical common usage (Webster's 1913): The act of regulating, or the state of being regulated; a rule or order prescribed for management or government; a regulating principle; a governing direction; precept; law — as in the regulations of a society or a school.
The ordinary and legal meanings are unusually close, but the legal meaning is sharper in one important respect: in law, a regulation is not merely an internal rule of a private organization but a binding governmental directive carrying the force of law. The everyday usage of "regulation" includes corporate policies, club rules, and informal guidelines. Legal research requires distinguishing governmental regulations (enforceable, subject to administrative procedure requirements) from private organizational rules that may borrow the same word but carry no public law force.
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Common Confusion
REGULATION vs. STATUTE. These are both binding law, but they originate in different branches of government and follow different procedures. A statute is enacted by a legislature through the full legislative process. A regulation is issued by an executive agency under delegated authority — it cannot exceed the bounds of the enabling statute. When a conflict arises, the statute governs. Historical sources sometimes use "regulation" loosely to mean any binding rule, including legislative enactments; researchers should not assume the modern administrative-law meaning in pre-20th-century sources.
REGULATION vs. ORDINANCE. An ordinance is a law enacted by a local legislative body (city council, county board). A regulation is issued by an administrative or executive body. The distinction matters for constitutional analysis and for determining the applicable procedural requirements.
REGULATION vs. GUIDANCE. Not all agency pronouncements are regulations. Guidance documents, policy statements, and informal agency communications do not carry the binding force of a properly promulgated regulation. Courts have increasingly scrutinized agencies that treat guidance as de facto binding rules.
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Core Elements
For a document to constitute a binding regulation in the modern administrative law sense, it typically requires:
1. STATUTORY AUTHORIZATION. An enabling act must grant the agency power to issue rules in the relevant subject area.
2. PRESCRIBED PROCEDURE. In the U.S. federal system, substantive ("legislative") regulations must ordinarily be promulgated through notice-and-comment rulemaking under the Administrative Procedure Act. Deviation is grounds for invalidation.
3. PUBLICATION. Regulations must be published — in the Federal Register for U.S. federal rules — before they bind the public.
4. CONSISTENCY WITH ENABLING STATUTE. The regulation must not exceed the authority granted or contradict the statute it implements.
5. CONSTITUTIONAL LIMITS. The regulation must not violate constitutional constraints, including non-delegation principles, due process, and applicable substantive rights.
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Recognized Forms
/SUBTYPES
LEGISLATIVE (SUBSTANTIVE) REGULATION: Creates new rights and duties; has the full force of law; requires notice-and-comment under the APA.
INTERPRETIVE REGULATION: Explains or construes existing statutes or substantive rules; does not itself create binding legal obligations, though courts may defer to it.
PROCEDURAL REGULATION: Governs internal agency practice and process rather than the substantive conduct of regulated parties.
EMERGENCY REGULATION: Issued without standard notice-and-comment procedures when the agency makes a finding of urgent need; typically subject to time limits and subsequent standard rulemaking.
SELF-REGULATORY ORGANIZATION (SRO) RULE: In securities law, rules issued by recognized private bodies (FINRA, NYSE) under authority delegated by a government regulator. These occupy a hybrid space — private in origin, but treated as quasi-governmental.
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Why It Matters in Research
HISTORICAL SOURCES USE THE TERM LOOSELY. Black's 1st and 2nd editions define "regulation" simply as "a rule or order prescribed for management or government" — a definition that encompasses everything from military dress codes to corporate bylaws. The modern administrative-law meaning (an agency rule promulgated under statutory authority following prescribed procedure) is a 20th-century refinement. Researchers working in pre-New Deal materials should not assume the structured regulatory framework that the term implies today.
THE BOUVIER'S ENTRY IS A DEAD END. Bouvier's redirects to "INTERNATIONAL," which in context refers to international regulation — a reminder that for 19th-century practitioners, the most practically significant "regulations" were often treaties, international commercial conventions, or maritime rules. This is jurisdictionally and conceptually distinct from modern domestic administrative regulation.
ADMINISTRATIVE LAW CORPUS CONNECTIONS. Research into any specific regulation requires tracking through (1) the enabling statute, (2) the regulatory history in the Federal Register (proposed rule, comments, final rule), (3) the codified rule in the C.F.R., and (4) judicial review decisions. None of these layers is self-contained. Missing any one can produce a fundamentally incomplete picture of what the regulation actually requires and what legal force it carries.
DEFERENCE DOCTRINE SHIFTS. The legal weight courts give to agency regulations has been in active flux. Doctrines governing judicial deference to agency regulatory interpretations have evolved substantially and remain contested. Any research into regulatory authority or validity must account for current doctrine — historical sources predate these developments entirely.
INTERNATIONAL DIMENSION. In European Union law, "regulation" has a precise technical meaning: a directly applicable EU legislative act binding in all member states without national implementing legislation. This is distinct from an EU "directive," which requires national transposition. Researchers crossing between U.S. and EU regulatory materials must be alert to this terminological divergence.
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Historical Dictionary Support
Black's Law Dictionary (1st and 2nd editions) offer nearly identical definitions: "the act of regulating; a rule or order prescribed for management or government; a regulating principle; a precept." The 2nd edition adds case citations — Curry v. Marvin, Ames v. Union Pac. Ry. Co., and Hunt v. Lambertville — which ground the definition in actual judicial use, though none of those cases elaborate a sophisticated administrative law framework. Both editions essentially reproduce Webster's definition, confirming that at the time of publication, "regulation" had not yet acquired its specialized administrative law meaning.
Bouvier's is unhelpful for this term in isolation. Its cross-reference to "INTERNATIONAL" reflects the 19th-century view that the most legally significant regulations were those governing commerce and relations among nations rather than domestic administrative rules.
What all three historical sources miss is the modern infrastructure of administrative law: the delegation doctrine, notice-and-comment rulemaking, judicial review standards, and the vast apparatus of the modern regulatory state that gives the term its contemporary legal weight. Researchers relying solely on historical dictionaries will find an accurate but thin account of the word — adequate for 19th-century research, insufficient for anything post-New Deal.
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Jurisdictional Note
The procedural requirements for valid regulation vary by jurisdiction. U.S. federal agencies follow the Administrative Procedure Act; state agencies follow state APAs that may differ significantly in notice requirements, comment periods, and judicial review standards. In EU law, "regulation" denotes a specific, directly applicable instrument distinct from a directive. Researchers should verify the applicable procedural regime before assessing a regulation's validity or legal force.
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Encyclopedia Cross-Reference
International Securities Regulation (Regulation S, ADRs) — Law Mind Business Organizations & Corporate Law Encyclopedia. (For the specific context of cross-border securities regulation, including the SEC's Regulation S framework governing offshore transactions.)
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