Definition
In Roman law, the formal argument of a cause presented by counsel on both sides of a dispute. The term refers to the adversarial stage of Roman civil procedure in which advocates pleaded the merits of their respective positions before the tribunal — the oral contention and juridical debate that constituted the argumentative heart of a Roman proceeding.
Why It Matters in Research
This is a narrow Latin procedural term drawn from classical Roman law and carried into later legal dictionaries largely through civilian scholarship. Researchers are unlikely to encounter it in common law sources or modern Anglo-American materials. Its primary research utility is in understanding Roman and civil law procedure, and in tracing the influence of Roman procedural vocabulary on later civilian systems and early canon law courts. When working through historical civil law treatises or Romanist scholarship, disceptio causæ identifies a specific stage of proceedings — the argumentative phase — distinct from the pleading or evidentiary stages. Researchers should be alert to the fact that Black's relies here on Calvin (Johannes Calvinus, Lexicon Juridicum, 1600s), a secondary civilian glossary, rather than a primary Roman source, which limits the term's authority as a reconstruction of classical usage.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) provides the only entry among the surveyed sources, and it is brief: "The argument of a cause by the counsel on both sides," attributed to Calvin. This single-line treatment reflects the term's status as a civilian borrowing preserved in legal dictionaries more as a glossary artifact than as a term with active doctrinal significance. No additional historical dictionary sources in the current corpus address the term. The reliance on Calvin is notable — Calvinus was a systematic compiler of civil and Roman law vocabulary, and his definitions were widely reproduced in later legal dictionaries, sometimes without independent verification against primary Roman texts. Researchers should treat the Black's entry as a transmission of Calvin's gloss rather than an independently sourced definition.
Jurisdictional Note
Disceptio causæ has no application in modern common law jurisdictions. It belongs to the vocabulary of Roman civil procedure and may appear in scholarly treatments of civil law systems, ecclesiastical courts, or historical comparative law materials.