Definition
EMA is an archaic Latin verb form meaning "to drive away," "to eject," or "to expel." In historical English legal usage, the term appears in the context of writs of execution — specifically in connection with the sheriff's power and duty to deliver possession of lands to a judgment creditor. The term is not a noun designating a doctrine or office but a verbal command embedded in the formal Latin instrumentation of older writs, directing the expulsion of an occupant from land subject to execution.
In modern usage, EMA functions almost exclusively as an initialism with no connection to this historical legal meaning. The most legally significant modern expansions are:
1. European Medicines Agency — the European Union regulatory body responsible for the scientific evaluation, supervision, and safety monitoring of medicinal products across EU member states.
2. Economically Motivated Adulteration — a regulatory category used by the U.S. Food and Drug Administration (FDA) to describe the fraudulent substitution or addition of substances to food or other products for economic gain.
3. Excess Mileage Allowance — a contractual term appearing in vehicle lease agreements, referring to charges assessed when a lessee exceeds the mileage cap specified in the lease.
4. Exponential Moving Average — a statistical and financial calculation used in securities analysis and algorithmic trading.
Common Language
Modern common usage (Wiktionary): EMA functions as an initialism for multiple unrelated terms across medicine, finance, food safety, and transportation.
Historical common usage: No entry in Webster's 1913. The term does not appear in general English dictionaries of the period; its use was confined to Latin legal instruments.
Editorial note: The gap here is absolute rather than gradational. The historical legal term is a Latin verb embedded in writ practice; the modern initialisms share no conceptual lineage with it. A researcher encountering "EMA" must determine from context whether they are reading a historical writ, an EU regulatory document, an FDA guidance document, or a financial instrument — the term carries no stable unified meaning across these fields.
Common Confusion
The primary confusion risk for legal researchers is mistaking EMA-as-initialism for a single stable term. The European Medicines Agency and economically motivated adulteration (FDA) both carry regulatory legal significance but operate in entirely different jurisdictions and subject-matter areas. A researcher working in EU pharmaceutical law and one working in U.S. food safety law may both cite "EMA" while referring to entirely different legal frameworks. Secondary confusion: the historical Latin verb form will appear in older treatises and writ forms without explanation, and modern researchers unfamiliar with execution practice may misread it as an abbreviation rather than a word.
Why It Matters in Research
For researchers working in historical sources, EMA appears in the technical Latin of execution writs tied to the delivery of a defendant's lands — a procedure that evolved significantly between early common law and the reforms reflected in Stephens' Commentaries. Burrill's citation trail (Steph. Com., Crabb's Real Property, Sewell's Sheriff) points toward the mechanics of elegit and related writs, where the sheriff's power to expel and deliver possession was the operative moment of execution against land. Researchers tracing that procedural history should follow the citations to Stephens and Crabb rather than treating EMA itself as a searchable term in modern databases, where it will return nothing relevant.
For modern regulatory researchers, the European Medicines Agency is the controlling body for medicinal product authorization in the EU, and its guidance documents carry quasi-legislative weight in EU member states and in jurisdictions with regulatory alignment agreements. Researchers should not conflate EMA guidance with binding EU regulations or directives — EMA produces opinions and guidelines, while binding force flows from EU legislative instruments.
FDA's economically motivated adulteration framework is a distinct domestic U.S. regulatory category. Researchers working food safety enforcement cases should locate the FDA's published definitions and guidance rather than relying on dictionary treatment, as the category has evolved through agency guidance documents rather than statutory text.
Historical Dictionary Support
Burrill's is the only historical dictionary source covering this term, and its treatment is narrow: EMA as a Latin verb command in the context of execution against land, with supporting citations to Stephens' Commentaries, Crabb's Real Property, Sewell's Sheriff, and Meeson & Welsby. Burrill does not develop the term as a doctrine; he flags it as a verb meaning "to drive away" or "to eject," appearing in the Articles confirming Magna Carta. The citation to Meeson & Welsby (15 M. & W. 764) suggests the term had some currency in mid-nineteenth century English case law in the context of execution practice, though it does not appear to have survived as a term of art into modern common law systems. No other historical dictionary in the Law Mind corpus addresses EMA. The absence of treatment in standard historical dictionaries confirms this was specialized writ vocabulary rather than a general term of legal art.
Jurisdictional Note
The historical Latin verb form is specific to English common law writ practice and has no surviving operational use in U.S., Canadian, or Australian legal systems. The European Medicines Agency operates exclusively within EU regulatory jurisdiction. The FDA's economically motivated adulteration framework is U.S. domestic law.