Definition
A Latin term from Roman and feudal law with two primary legal meanings that operated in distinct legal contexts:
1. (Civil law) To open — used specifically in the sense of formally opening a sealed legal instrument, most commonly a will or codicil. The act of aperire in this context was a procedural step: the physical and official unsealing of a testamentary document so that its contents could be read, authenticated, and given legal effect.
2. (Civil law, secondary) To open a way or road — used in the law of servitudes to describe the act of establishing or opening a right of way (via) over land.
3. (Feudal law) To escheat, or to revert — used to describe the process by which land reverted to the lord upon the failure of heirs or breach of feudal obligation. In this context, aperire carried the sense of the tenure "opening up" back to its source.
Common Confusion
The word aperire most naturally suggests a simple act of physical opening, but its legal applications were technical and context-dependent. Encountering aperire in a civil law text almost always signals the opening of a will, while the same term in feudal sources signals escheat. Researchers working across civil and feudal materials should not assume the same operative meaning without confirming the context.
Why It Matters in Research
Aperire is a term researchers will encounter only in civil law, Roman law, or feudal law sources — it has no continuing doctrinal life in modern common law jurisdictions under this name. Its research value is interpretive rather than operative.
When reading texts concerning Roman testamentary procedure, aperire marks a critical procedural moment: the formal opening of a sealed will before witnesses and officials. This was not merely a physical act but a legally required step that triggered subsequent proceedings — examination of seals, attestation by witnesses, and the beginning of probate-like processes. Sources referencing Digest 29.5 in this context are discussing the interplay between will-opening and the senatus consultum Silanianum, which imposed consequences on the household of a murdered testator if the will was opened before inquiry was complete. A researcher encountering aperire in that context is in the middle of a significant cluster of Roman procedural and criminal law.
In feudal sources, aperire as escheat appears in connection with the feudal incidents — the rights lords retained over land held from them. Researchers working on medieval land tenure, feudal incidents, or the historical roots of escheat doctrine should note that Burrill's cross-references to Feudal Lib. 1, tit. 18 and Lib. 2, titt. 34–35 point to the Libri Feudorum, the principal medieval compilation of Lombard feudal customs. This is a specialized source and its provisions do not map cleanly onto English common law escheat as it developed after the Norman Conquest. Conflating the two can produce anachronistic readings.
Aperire does not appear as a headword in most English legal dictionaries because it was recognized as a civilian and feudal term with no direct common law equivalent. Researchers finding it in English medieval or early modern legal writing are likely reading a text with civil law influence or a treatise writer drawing on Roman sources for analogy.
Historical Dictionary Support
Burrill is the primary English-language legal dictionary source for this term. His entry is compact but accurate, distinguishing the civil law and feudal law usages and providing Digest and Libri Feudorum citations. The entry also appends the separate Greek term APHĒLIX (a minor under age), which appears to be a typographical or editorial continuation artifact rather than a related term — researchers should treat it as a separate entry that was run together in the original printing.
Burrill's civil law definitions align with standard Roman law usage as elaborated in the Digest. His feudal law note correctly identifies aperire in the sense of reversion to the lord, consistent with the Libri Feudorum's treatment of lapsed fiefs. No meaningful divergence from other historical sources is apparent, though the term's absence from other major English law dictionaries (Bouvier, Black's early editions) confirms its status as a specialist term outside the common law mainstream.
Jurisdictional Note
Aperire as a legal term of art is confined to Roman civil law and medieval feudal law traditions. It carries no operative significance in contemporary common law jurisdictions, though it may appear in historical documents, scholarly editions of medieval sources, or comparative law texts. Louisiana and other mixed-jurisdiction systems drawing on civilian tradition may occasionally encounter related concepts in historical materials.