Definition
A Latin term from Roman and early English law with two distinct operational meanings depending on context:
1. (Judicial) To decide or determine judicially; to resolve a matter by authoritative judgment. Used in both the civil law tradition and in early English common law to describe the act of a court or judge settling a disputed question with finality.
2. (Property) To fall, fall to, or revert; to remain to or escheat to another. In the property law context, decidere describes the operation by which land or an interest passes to a lord or superior by failure of heirs, forfeiture, or the expiration of a grant — what later English law would call escheat or reversion.
Common Confusion
The two meanings of decidere occupy entirely different legal domains and should not be conflated. The judicial sense (to decide) and the property sense (to fall or escheat) share a Latin root but function as distinct technical terms in the sources. A researcher encountering decidere in a medieval property record should not assume a judicial context, and vice versa. The property meaning is the more archaic of the two and largely disappeared from legal usage as English land law developed its own vocabulary for escheat and reversion.
Why It Matters in Research
Researchers working with Bracton or other early common law texts in Latin must determine from context which sense of decidere is operative. The judicial sense appears in passages about the authority and process of courts; the property sense appears in discussions of tenure, escheat, and the mechanics of feudal land-holding. Misreading one for the other will produce serious interpretive errors.
The property meaning of decidere connects directly to the Statute Quia Emptores (1290), which restructured the rules governing subinfeudation and the circumstances under which land would fall back to a superior lord. Burrill's citation to that statute anchors the property sense firmly in the feudal tenure context. Researchers consulting Quia Emptores for its effects on subinfeudation and free alienation should be alert to decidere as a term describing what happens to land when the chain of tenure fails.
For the civil law sense, the Code citation (Cod. 3.26.5) places the term in Justinian's compilation, signaling that this usage carries the full weight of the Roman law tradition of judicial determination. Researchers tracing the civilian influence on English equity or ecclesiastical courts may encounter the judicial sense of decidere in that lineage.
Because decidere is an untranslated Latin term appearing in primary sources rather than a term with a developed doctrinal life in English law, it will rarely appear in case reporters or modern treatises. Research use is almost exclusively in reading and translating medieval Latin legal documents, Bracton's De Legibus, civilian sources, or annotated editions of early statutes.
Historical Dictionary Support
Burrill's Law Dictionary is the primary English-language legal dictionary source for this term. Burrill captures both meanings cleanly and provides the essential primary citations: Bracton fol. 1b for the judicial sense, Bracton fol. 84b and the Statute Quia Emptores c. 2 for the property sense. The Justinian Code reference anchors the civil law root.
No significant divergence among historical sources is noted, as decidere is a term whose legal treatment is essentially exhausted by the Latin sources themselves. Later English legal dictionaries either omit it or track Burrill closely. The term does not appear to have generated interpretive controversy in the dictionary literature; its dual meaning is treated as a settled matter of Latin legal vocabulary.
What the historical dictionaries do not address is the practical significance of the property sense in the feudal tenure system — that significance must be drawn from Bracton's text and the surrounding scholarship on medieval English land law rather than from dictionary entries alone.
Jurisdictional Note
As a Latin term of art from Roman and early English law, decidere has no current jurisdictional variation. Its relevance is historical and textual, confined to civil law sources and pre-modern English common law materials.