Definition
Interpellation carries distinct meanings depending on context:
1. Civil law (contractual). The formal act by which a party bound under an agreement declares that the obligation will not extend beyond a fixed time. It functions as a notice or warning that terminates or limits a continuing duty, and is associated with placing a debtor in default (mora). In this sense it is closely connected to the civilian concept of putting a party in delay.
2. Parliamentary and constitutional law. A formal procedural mechanism by which a member of a legislature demands that a minister or government official explain a particular act, policy, or decision. Distinguished from an ordinary parliamentary question by its greater formality and, in many systems, its capacity to trigger a vote of confidence or censure. Common in civil law legislative systems across Europe, Latin America, and elsewhere.
3. General procedural usage (historical). A formal summons, citation, or act of official questioning. This sense appears in older ecclesiastical and civil procedure and is now largely obsolete in Anglo-American practice.
Common Language
Modern common usage (Wiktionary): The act of questioning government officials about an act or policy; also, in discourse theory, the act of identifying or hailing a subject.
Historical common usage (Webster's 1913): Interruption of proceedings; intercession or interposition; an imperative demand for official explanation; a formal summons.
The ordinary English senses center on interruption and questioning and track the parliamentary meaning reasonably well. The gap that matters for legal researchers is the civil law contractual sense — the formal act limiting a time-bound obligation — which has no counterpart in common usage and is easily missed when the word appears in civilian legal texts without explanation.
Common Confusion
Interpellation (civil law) is sometimes confused with INTERPLEA, a distinct procedural device by which a defendant who holds property claimed by multiple parties disclaims any personal interest and forces the rival claimants to litigate between themselves. Black's 2nd edition places the two terms in direct proximity, and researchers scanning the page may conflate them. They are unrelated: interpellation addresses the duration or continuation of an obligation; interplea addresses competing claims to property. The modern equivalent of interplea is INTERPLEADER.
Why It Matters in Research
Researchers will encounter interpellation in three distinct documentary streams, and the term means something different in each.
In civilian legal materials — French, Spanish, Louisiana, Quebec, and Latin American sources — interpellation is a term of art in the law of obligations. It signals the moment at which a debtor is formally placed in default (mise en demeure), which has downstream consequences for interest, damages, and prescription. When reading civilian codes, commentaries, or notarial instruments, failure to recognize this sense will cause researchers to misread the operative legal moment in an obligation.
In parliamentary and constitutional documents — particularly those from continental European systems, and from former civil law jurisdictions — interpellation appears as a formal legislative tool. It is more consequential than a simple question: in many systems, the government's response can be followed by a motion, and the record of interpellations is a primary source for legislative intent and political accountability. Researchers working with comparative constitutional law, foreign legislative records, or international organization documents will encounter this usage frequently.
In older Anglo-American ecclesiastical and equity sources, interpellation appears in the now-archaic sense of a formal summons or citation. This usage is effectively dead in modern common law practice but can surface in historical transcripts and ecclesiastical court records.
The term is absent from most modern American legal dictionaries, which reflects the fact that neither the contractual nor the parliamentary sense has direct purchase in U.S. law. Researchers should not assume American legal meaning from American legal sources.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) defines interpellation exclusively through the civil law contractual sense, citing Wolff's Institutiones Juris Naturae et Gentium § 752 for the proposition that a bound party may declare the limit of the obligation. This is a narrow but accurate rendering of the civilian concept. Black's does not address the parliamentary meaning at all, which reflects the Anglo-American orientation of that dictionary and the limited relevance of civilian parliamentary procedure to American courts at the time of publication.
Webster's 1913 is actually more complete than Black's on the range of meanings, capturing interruption, intercession, parliamentary questioning, and formal summons. For a legal dictionary, this breadth is somewhat unusual; it reflects that interpellation was still a live word in educated English usage in the late nineteenth century, before it receded from common American discourse.
Neither source addresses the discourse-theory and psychoanalytic sense of interpellation (associated with Louis Althusser's concept of ideological hailing), which has become prominent in humanities scholarship. This sense is entirely non-legal and should not be imported into legal analysis, though researchers working across disciplines may encounter it.
Jurisdictional Note
The civil law contractual sense is operative in Louisiana, Quebec, and jurisdictions whose private law derives from French, Spanish, or mixed civilian traditions. The parliamentary sense is standard in the constitutional law of most civil law countries and in the rules of procedure of the European Parliament and various international legislative bodies. Neither sense is a term of art in common law jurisdictions outside those with civilian influence.