Definition
Dom. Proc. is a Latin abbreviation for Domus Procerum, meaning "House of Lords" — the upper chamber of the British Parliament that, until the Constitutional Reform Act 2005, served as the highest court of appeal in the United Kingdom for civil matters and, in practice, for most criminal matters as well. In legal citation and procedural shorthand, "Dom. Proc." appears in older English reports and pleadings to identify proceedings before or judgments of the House of Lords in its judicial capacity.
Why It Matters in Research
Researchers encountering "Dom. Proc." in historical English legal sources need to understand two things: first, that the abbreviation refers specifically to the judicial function of the House of Lords, not to its legislative role; second, that this court no longer exists under that name. The House of Lords' appellate jurisdiction was transferred to the newly created Supreme Court of the United Kingdom in October 2009. Any authority styled "Dom. Proc." or citing proceedings before the Domus Procerum is pre-2009 English law and must be evaluated accordingly.
The abbreviation appears most commonly in Law Reports from the eighteenth through early twentieth centuries, in the headnotes and procedural histories of English cases. American researchers working with early republic-era legal materials may also encounter the abbreviation in treatises and practice manuals that drew heavily on English common law authorities, where citations to Dom. Proc. decisions were treated as persuasive or even near-authoritative.
When tracing a case through the English appellate hierarchy in historical sources, failure to recognize Dom. Proc. as the Lords' judicial committee can cause a researcher to misread the procedural posture of a dispute or to miss the controlling authority in a line of cases. The abbreviation is easy to overlook and easy to confuse with other Latin court abbreviations in the same era.
Historical Dictionary Support
Bouvier's Law Dictionary provides a compact and accurate entry: "Domus Procerum. The house of lords," citing Wharton's Law Lexicon. Both Bouvier and Wharton are working from the same well-established Latin usage. The historical dictionaries agree on the translation and do not reflect any meaningful divergence. What they understandably do not address — given their nineteenth-century publication dates — is the institutional dissolution of the Lords' judicial role and the transition to the UK Supreme Court. Researchers relying solely on these sources will have an accurate translation but an incomplete picture of the term's current inapplicability as a live court designation.
Jurisdictional Note
Dom. Proc. is exclusively an English legal term and has no counterpart in American, Scottish (as a separate court), or other common law jurisdictions. Scotland had its own final appellate court (the Court of Session / House of Lords for Scottish civil appeals), and Irish researchers will encounter the abbreviation in the context of pre-partition appeals to Westminster. The term has no operative legal significance in any jurisdiction today.