Definition
The word "section" carries several distinct legal meanings depending on context. All share the root idea of a divided portion of a larger whole.
1. Documentary section. In statutes, codes, regulations, contracts, constitutions, and other legal writings, a section is the smallest formally numbered subdivision of a text. It is the basic unit of legal citation and organization, typically denoted by the symbol § (or §§ for plural). A section may itself be divided into subsections, paragraphs, clauses, and subparagraphs, but the section is the primary reference point for locating and citing a specific rule or provision.
2. Land section. In the federal public land survey system (the Public Land Survey System, or PLSS), a section is a standard unit of land measurement equal to one square mile, or 640 acres. Sections are numbered subdivisions of a township, which measures six miles square and contains 36 sections arranged in a numbered grid. Sections are further divided for conveyance purposes into half-sections (320 acres), quarter-sections (160 acres), half-quarter-sections (80 acres), and quarter-quarter-sections (40 acres). This system governs land descriptions across most states carved from federal territory west of the original thirteen colonies.
Common Language
Modern common usage (Wiktionary): A part, piece, or subdivision of anything; a part of a document, especially a major part; also a cutting or a cross-sectional image.
Historical common usage (Webster's 1913): The act of cutting, or separation by cutting; a distinct part or portion of a book or writing; a subdivision of a chapter; the division of a law or other writing, often denoted by the character §.
The common and legal meanings are close but not identical in either direction. In ordinary English, "section" is casual and flexible — a section of highway, a section of an orchestra. In legal usage it is a term of art with formal consequences: the section number determines which legal rule applies, which amendment controls, and how land is identified in a deed. Researchers should not treat "section" as merely organizational shorthand; in land law especially, the section designation carries precise acreage and locational meaning that a casual reading would miss.
Recognized Forms
/SUBTYPES
Documentary context:
— Statutory section: The primary numbered unit of a statute or code (e.g., 42 U.S.C. § 1983).
— Regulatory section: The primary numbered unit of a regulation (e.g., 29 C.F.R. § 1910.134).
— Constitutional section: A numbered division of an article within a constitution.
— Contract section: A numbered or lettered division of a contract or agreement, not always formally called a "section" but often so designated.
Land survey context:
— Full section: 640 acres; one square mile.
— Half-section: 320 acres; one-half of a section, described by compass direction (e.g., "North Half of Section 14").
— Quarter-section: 160 acres; one-quarter of a section (e.g., "Northwest Quarter of Section 14").
— Half-quarter-section: 80 acres.
— Quarter-quarter-section: 40 acres; the smallest standard PLSS subdivision.
Why It Matters in Research
Documentary sections. The section is the atomic unit of legal citation. When tracing the history of a statutory provision, researchers must account for recodification: a provision that was § 5 of an 1880 act may appear as § 247 in a later code revision without any change in substance. Cross-referencing session law sections to codified sections (and vice versa) is one of the most common traps in historical statutory research. Older legal dictionaries and treatises may cite to session law sections that no longer correspond to current code numbering.
Within the Law Mind corpus, section references in older texts often point to now-superseded codes (e.g., citations to the Field Code, the Revised Statutes of 1878, or territorial codes). Researchers should verify which version of a code was in force when a source was written before treating a section citation as a live reference.
Land sections. The PLSS applies only to states surveyed under the federal system — generally states admitted after the original thirteen colonies, with important exceptions (Texas, Hawaii, and portions of other states retain different survey systems). In states with metes-and-bounds traditions (the original thirteen colonies plus Texas, Kentucky, Tennessee, Vermont, Maine, West Virginia, and Hawaii), the word "section" in a deed or legal description does not carry PLSS meaning and should be read in its general sense of a portion or parcel. Confusing these systems leads to serious errors in historical land title research.
Historical section numbering in land patents and entry certificates used the PLSS grid as the authoritative description. A quarter-section homestead entry in an 1870s land patent is a legally precise locator, not a rough estimate.
Historical Dictionary Support
Rapalje & Lawrence provide the cleaner treatment of the land-survey meaning, correctly identifying townships as six-mile-square units containing 640-acre sections, with the standard subdivisions down to half-quarter and quarter-quarter sections. This reflects the scheme established under the Land Ordinance of 1785 and carried forward through federal land disposal statutes.
Black's 2nd Edition Supplemental handles the documentary meaning, noting that "sections" are the smallest distinct and numbered subdivisions of textbooks, codes, and statutes, with "articles" and "paragraphs" as occasional alternatives. This points to an important historical variability: nineteenth-century legal instruments were not uniform in their subdivisions. Some codes used "article" where modern codes would say "section"; some used both. Researchers working in pre-1900 sources should not assume that "article" and "section" are interchangeable, but should check the structural conventions of the specific instrument.
Webster's 1913 confirms that the § symbol was already the conventional shorthand for a documentary section by the late nineteenth century, which helps date the appearance of that symbol in corpus documents.
Neither historical dictionary addresses regulatory sections (the CFR-style usage) because the modern federal regulatory system postdates both. Researchers should not expect these sources to illuminate administrative law citation practices.
Jurisdictional Note
The PLSS land-section system applies to the contiguous United States west of the original thirteen colonies, excluding Texas (which retained its own survey system upon annexation) and portions of states with pre-existing Spanish or French land grants. Researchers working with land titles in Louisiana, New Mexico, Arizona, California, Florida, or other areas with colonial land grant histories will encounter hybrid systems where PLSS sections coexist with older grant descriptions in the same county.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Public Land Survey System; Statutory Interpretation; Legal Citation Forms.