Definition
Description in law carries several distinct meanings depending on context. In its broadest sense, it is an account of a subject by recitation of its characteristic qualities — a definitional portrait in words. More specifically:
1. General legal description: An account or delineation of a particular person, thing, or subject by enumeration of its identifying characteristics and qualities. Used in pleadings, contracts, and instruments wherever a subject must be identified with precision.
2. Description of property (personal): A written account of the state and condition of personal property, titles, or papers — more detailed than an inventory, but without involving appraisement or valuation.
3. Description of real property: The portion of a deed or conveyance that identifies the land intended to be transferred. This is one of the essential elements of a valid deed. It must be sufficiently certain to permit the property to be located and distinguished from other parcels. Typical methods include metes and bounds, government survey (township and range), and reference to recorded plat maps.
4. Description in patent law: An exact written account of an article, mechanical device, or process that is the subject of a patent application. Sufficiency of description is a formal requirement for patent validity.
5. Description in pleading: A variance doctrine rule requiring that allegations describing persons or things must match the proof offered at trial with sufficient accuracy to avoid prejudice and confusion.
Common Language
Modern common usage (Wiktionary): A sketch or account of anything in words; a portraiture or representation in language; an enumeration of the essential qualities of a thing or species; a set of characteristics by which someone or something can be recognized.
Historical common usage (Webster's 1913): The act of describing; a delineation by marks or signs; a sketch or account of anything in words; also, a class or kind to which a representation is applicable.
The common meanings and the legal meanings overlap substantially at the surface — both involve identifying something in words. The legal significance is that description in property law and patent law carries formal sufficiency requirements with legal consequences for invalidity. A description that would satisfy ordinary communication may fail as a legal instrument if it cannot unambiguously identify the subject matter. The gap between common and legal usage is not one of meaning so much as of precision and consequence.
Recognized Forms
/SUBTYPES
DESCRIPTION OF REAL PROPERTY: The identification clause in a deed. Must be sufficient to locate the parcel without resort to extrinsic evidence, though courts permit reference to monuments, maps, and adjoining owners. Three dominant methods — metes and bounds (courses and distances from a fixed point), government survey (sections, townships, and ranges under the Public Land Survey System), and plat reference (lot and block numbers from a recorded subdivision map) — each carry their own conventions and ambiguity rules.
DESCRIPTION IN PLEADING: Governs the variance doctrine. Allegations describing a party or instrument must match proof at trial. An immaterial variance — one that could not have misled the opposing party — is generally disregarded. A material variance, where the description in the pleading and the proof differ in a way that could cause prejudice, may be fatal.
DESCRIPTION IN PATENT LAW: The written description requirement demands that the specification disclose the invention with sufficient particularity to demonstrate the inventor possessed the claimed invention. Distinct from the enablement requirement, though related.
Why It Matters in Research
The term description appears across the Law Mind corpus in several distinct functional roles, and conflating them is a genuine research hazard.
For real property research, description is a term of art with high stakes. Historical conveyancing sources — including those in the corpus — use description to mean the identifying clause of a deed, and disputes over ambiguous descriptions generated extensive litigation throughout the nineteenth century. Researchers examining historical deeds should be alert to the difference between a description that is void for uncertainty (no valid conveyance results) and one that is merely ambiguous (courts will apply extrinsic evidence to resolve it). The corpus encyclopedia entries on metes and bounds and plat maps address these resolution rules directly.
For pleading research, the description rules appear in the context of variance doctrine, which was considerably more technical under common-law pleading than under modern code pleading. Bouvier, Rapalje, and the older Black's editions reflect a stricter variance regime than modern practice.
For patent law research, the historical sources in the corpus treat description primarily as the specification requirement — the precursor to what modern patent law now separates into the written description requirement and the enablement requirement. This bifurcation is a modern doctrinal development; historical sources treat them as a unified concept.
Anderson's Dictionary of Law references a cluster of cases and treatises — including Greenleaf on Evidence and Wharton on Evidence — relevant to the pleading-description and variance dimensions. These citations point toward the evidentiary rules governing how descriptions in instruments are interpreted when disputed, a research thread that intersects with the parol evidence rule and the plain meaning doctrine.
Historical Dictionary Support
The historical dictionary sources are in substantial agreement on the core meanings, though each emphasizes different applications.
Black's Law Dictionary (both editions) presents three parallel sub-definitions — general account, enumeration of estate items, and patent specification — reflecting the range of transactional contexts where the term operates. The consistent formulation across editions shows definitional stability.
Bouvier's Law Dictionary adds the pleading dimension explicitly, noting that description in allegations is subject to variance rules. Bouvier's language — "a kind of inventory, but more particular in ascertaining the exact condition of the property, and without any appraisement" — has been carried forward nearly verbatim into Rapalje & Lawrence, suggesting this formulation became standard.
Rapalje & Lawrence usefully separates the personal property and real estate meanings into numbered entries, making the distinction explicit that other sources leave to context. The real estate entry — "that part of a conveyance of land which identifies the property intended to be conveyed" — is the clearest brief statement of the property-law meaning across the historical sources.
Anderson's Dictionary of Law provides the most citation-dense treatment, drawing on Ohio, Connecticut, and federal cases as well as Greenleaf and Wharton. This makes Anderson's the most useful historical source for research into how description rules were applied judicially, as opposed to how they were defined doctrinally.
None of the historical sources address patent law's modern bifurcation between written description and enablement, and none distinguish between void-for-uncertainty and ambiguous-but-curable descriptions with the precision that nineteenth-century conveyancing practice actually required.
Jurisdictional Note
The sufficiency standard for property descriptions varies by jurisdiction. Most states apply a rule that a description is sufficient if it provides a key by which the property can be identified with certainty, even if extrinsic evidence is needed to apply that key. Some jurisdictions are stricter, requiring that the description be complete on the face of the instrument. Government survey descriptions are standard in states carved from the public domain; metes and bounds predominate in the original thirteen colonies and states that preceded federal land surveys.
Encyclopedia Cross-Reference
Deed Requirements — Writing, Description, Grantor/Grantee, Delivery, and Acceptance (The Law Mind Real Estate Transactions & Construction Encyclopedia)
Property Descriptions — Metes and Bounds, Government Survey, Plat Maps, and Ambiguity (The Law Mind Real Estate Transactions & Construction Encyclopedia)
Real Estate Transactions — Deed Requirements (The Law Mind Property Law Encyclopedia)