Definition
A Latin term from Roman civil law with two closely related meanings. First, to affix a seal to a legal instrument — either individually or jointly with others — as a formal act of authentication. Second, more broadly, to assign or designate something for a specific purpose. Both senses involve the formal allocation or marking of a legal act: one physical (sealing a document), one transactional (directing a thing or obligation toward a particular end).
The term is a compound of the Latin *ad* (to, toward) and *signare* (to mark or sign), which together convey the act of marking toward a specific result. In Roman law practice, sealing was not merely ceremonial — it was an act of legal significance that could authenticate a testament, establish witnessing, or formalize an obligation.
Why It Matters in Research
Researchers encountering *adsignare* in historical civil law sources should treat it as a gateway term with two directions: the documentary (sealing) and the transactional (assigning). The two meanings are related but not interchangeable, and context in the source text will determine which sense applies.
The term appears in the Digest (specifically cited at Dig. 26.8.20 in the context of guardianship and related formalities), so researchers working with Roman law sources, canon law commentaries, or early common law treatises influenced by civilian tradition may encounter it in either form. It is most likely to appear in discussions of testaments, suretyship, or tutelage, where both sealing and designation were legally operative acts.
Researchers should be alert to the close relationship between *adsignare* and *assignare* — Burrill himself cross-references both directions, and the boundary between the two in historical texts can be fluid. The term rarely appears in modern common law sources but may surface in Latin quotations within equity treatises, ecclesiastical law discussions, or scholarly treatments of Roman law influence on early Anglo-American practice.
Because *adsignare* is a purely civilian term with no independent common law life, it will not appear in English or American statutes. Its significance in the Law Mind corpus is archival and interpretive: understanding it clarifies the meaning of passages in civil law–influenced sources rather than resolving a live legal question.
Historical Dictionary Support
Burrill's Law Dictionary is the sole shelf source for this term, and its entry is compact but sufficient. Burrill gives both the sealing and assigning senses, references the Digest, and cross-refers to *assignare* — usefully flagging that the two Latin terms share conceptual territory. The entry does not distinguish how Roman jurists weighted the two meanings differently across legal contexts, and it does not address the term's use in post-classical or medieval civil law commentary. Researchers needing deeper treatment should consult direct sources in the Digest corpus or civilian commentators such as Justinian's Institutes.
No other historical dictionary in the Law Mind shelf covers this term independently, which reflects its status as specialist civilian vocabulary that did not migrate into general Anglo-American legal usage.