Definition
In French law, a formal demand served by a huissier (a court officer or judicial process server) by which one party officially calls upon another to do or refrain from doing a specific act. The sommation functions primarily as an evidentiary instrument: its central purpose is to establish, by official record, that on a particular date a specific demand was made. It is analogous in function to a formal notice or demand in common law systems, but carries the specific procedural weight of having been delivered by a state-authorized officer of the court.
---
Common Language
Modern common usage (Wiktionary): "Sommation" does not appear as a standard English word. In French, "sommation" means a summons, a demand, or a formal warning — also used in military and police contexts for a verbal order to halt or comply before force is applied.
Historical common usage (Webster's 1913): Not listed. The term did not enter general English usage.
The legal term as used in Anglo-American legal dictionaries retains its French civil law meaning without modification. Researchers should note that the French word carries both a civilian procedural sense (a formal legal demand) and a colloquial or military sense (a verbal warning). Only the former is relevant in the law library context.
---
Why It Matters in Research
SOMMATION appears in Anglo-American legal dictionaries almost exclusively in the context of explaining French civil procedure to common law practitioners and jurists — a function that was especially relevant during the nineteenth century, when commercial dealings between English-speaking merchants and French counterparts were common and disputes occasionally required understanding of French procedural concepts.
Several research traps are worth flagging:
First, the term is functionally untranslated in historical legal sources. Black's does not substitute an English equivalent; it defines the term by reference to its French procedural role. Researchers working in Louisiana law, Quebec law, or transnational commercial disputes of the 19th century may encounter the term in its operative sense and should not assume it maps cleanly onto "summons," "notice," or "demand" as those terms are used in common law jurisdictions.
Second, the huissier is the critical actor. A sommation derives its evidentiary force not merely from its content but from the identity of the server. In French procedure, a huissier is a sworn officer of the court, and service by a huissier creates a presumptively authentic record. This is distinct from service of process in American or English practice, where the server's role, while regulated, does not carry the same authenticating function.
Third, the term is essentially absent from American and English case law except in cases involving the interpretation of French documents or French procedural steps. It appears in conflict-of-laws contexts, estate and succession disputes involving French property, and 19th-century commercial arbitration where French procedural steps had to be reconstructed before an Anglo-American tribunal.
Researchers using Law Mind's corpus should treat SOMMATION as a French law entry rather than a general common law term, and cross-reference accordingly when tracing its use in Louisiana civil practice, where French civil law heritage persisted most strongly into American legal history.
---
Historical Dictionary Support
Both the first and second editions of Black's Law Dictionary provide substantially identical definitions, indicating no meaningful evolution of the term's treatment between editions. Both cite "Arg. Fr. Merc. Law, 574" — a reference to Arlidge's or a similar French mercantile law treatise — as authority, which underscores that the term entered the Black's dictionary tradition through commercial law channels rather than through domestic procedural law.
The definitions are notably spare: neither edition explains the consequences of a sommation in French procedure, nor does either discuss how an Anglo-American court should treat a sommation as evidence. This is a recognized limitation of the historical dictionary record. For fuller treatment, researchers would need to consult dedicated French civil law treatises or Louisiana civil procedure sources from the period.
No other major Anglo-American historical dictionaries in the Law Mind corpus appear to have treated this term independently, reflecting its status as borrowed technical vocabulary rather than naturalized legal terminology.
---
Jurisdictional Note
Louisiana is the most significant domestic American jurisdiction for this term. As a mixed civil law and common law jurisdiction with roots in French and Spanish colonial law, Louisiana practice historically recognized French procedural concepts including formal demand by court officer. Researchers examining 19th-century Louisiana practice should treat this term as potentially operative rather than merely descriptive.
---