Definition
A Latin term from Roman civil law denoting a colleague or associate invested with joint authority — that is, one who shares the same power or office with another. The term describes the relationship between co-holders of a magistracy or official function, where each member of the body holds coordinate, not subordinate, authority. Burrill's formulation captures it precisely: one "having the same power with another" (*qui sunt ejusdem potestatis*).
In practical Roman law terms, the concept underpins the republican principle of collegiality — the deliberate distribution of magisterial power across plural officeholders so that no single person exercised authority alone. The consuls were the paradigmatic collegae: two magistrates holding identical powers, each capable of acting independently but also capable of checking the other.
Why It Matters in Research
COLLEGA is a narrow, Roman law-specific term unlikely to appear as a live legal issue in American or English common law sources. Researchers encounter it primarily in two contexts:
1. Civil law treatises and digests. The term appears in annotations and translations of the Corpus Juris Civilis, particularly Digest 50.16.173, which Burrill cites directly. Researchers working in civilian jurisdictions — Louisiana, Quebec, or tracing the doctrinal lineage of continental European legal concepts — may encounter it in foundational sources. The Digest passage falls within the title *De Verborum Significatione* (On the meaning of terms), a definitional title frequently mined by lexicographers.
2. Historical legal dictionaries as secondary synthesis. Because the common law dictionaries (Black's, Bouvier's, Burrill's) each define COLLEGA, researchers using those tools as gateways into Roman law sources will find the term cross-mapped to its Latin context. The definitions are consistent across sources and essentially trace back to a single Digest locus — a useful signal that this is a term of art with a settled, bounded meaning rather than one that evolved or fragmented across jurisdictions.
Researchers should note that COLLEGA has no meaningful common law equivalent and does not map onto modern Anglo-American concepts of "colleague" in any technical legal sense. Its presence in 19th-century American dictionaries reflects the era's extensive civilian borrowing and the role of Bouvier's and Burrill's in mediating Roman law for practicing lawyers and judges who lacked direct access to Latin sources.
Historical Dictionary Support
All four source dictionaries agree on substance: COLLEGA means one invested with joint authority, a colleague or associate. The entries are strikingly consistent — Black's 1st and 2nd editions are identical; Bouvier's explicitly credits Black's. This chain of citation suggests that by the time these American dictionaries were compiled, the definition had been fixed by civilian scholarship and was being reproduced rather than independently developed.
Burrill's is the most useful of the four for research purposes. It supplies the Latin definitional phrase (*qui sunt ejusdem potestatis* — "those who are of the same power") and the specific Digest citation (Dig. 50.16.173), giving researchers a direct pathway into the Roman law source rather than a closed circular reference among English-language dictionaries.
What the historical dictionaries do not address: the institutional context of collegiality in Roman public law, the distinction between collegae in magistracies versus collegae in religious colleges (*collegia*), or the relationship between COLLEGA and the broader Roman concept of the *collegium* as a body corporate. Researchers needing that depth should turn to civilian treatises and Romanist scholarship rather than these dictionary entries.
Jurisdictional Note
COLLEGA has no operative role in modern American common law. It retains significance in civil law jurisdictions and in academic or historical legal research involving Roman law, canon law, or the civilian tradition. Louisiana legal scholars and historians of continental legal systems are the most likely modern researchers to need the term in a technical sense.