Definition
Prorogation is the formal postponement or suspension of a legislative body's session, carrying its business forward to a future time without dissolving the body itself. The term carries two distinct legal meanings depending on context.
1. Constitutional and Parliamentary Law. The act by which a sovereign or executive authority brings a current parliamentary session to an end and defers further business to a future session. Unlike dissolution, prorogation does not end the parliament's existence or require new elections. Unlike adjournment, which merely suspends proceedings within the same session from day to day, prorogation closes the session entirely. Business not concluded at prorogation lapses and must be reintroduced in the new session. In the English constitutional tradition, prorogation is effected by royal proclamation; the Crown may prorogue parliament repeatedly, though no prorogation historically extended beyond eighty days without renewal.
2. Civil Law. The extension of a previously fixed time period within which an act must be performed or a right exercised. This meaning — granting additional time beyond a set deadline — corresponds more closely to the general English concept of prolongation.
Common Language
Modern common usage (Wiktionary): Causing something to last longer; the action of proroguing an assembly, especially a parliament; the period between two sessions of a legislative body; deferral to a later time.
Historical common usage (Webster's 1913): The act of proroguing; the ending of a session of Parliament and postponement of its business by command of the sovereign.
The common meaning tracks the parliamentary sense closely, but glosses over a critical distinction: in common usage, prorogation is sometimes loosely described as "ending" a session, which implies finality. The legal distinction is sharper — prorogation suspends and defers; it neither dissolves the legislature nor terminates the legislative mandate. A researcher relying on non-legal sources may underestimate the difference between prorogation, adjournment, and dissolution.
Common Confusion
Prorogation, adjournment, and dissolution are frequently conflated, particularly in popular and historical writing.
— Adjournment suspends a sitting within the same session; business resumes where it left off.
— Prorogation ends the session but preserves the parliament; business lapses and must be reinitiated.
— Dissolution ends the parliament itself, requiring new elections before any legislative business can resume.
The confusion is consequential in historical research because writers often used "prorogation" loosely to mean any suspension of legislative activity. Check the specific constitutional context before treating early sources as precise on this distinction.
Why It Matters in Research
Researchers working in constitutional history, parliamentary law, or British legal history will encounter prorogation in contexts ranging from routine procedural records to politically charged royal prerogative disputes. The term's significance has fluctuated considerably.
In English constitutional history, the Crown's power to prorogue was largely uncontested as a practical matter of scheduling until the 20th and 21st centuries, when prorogation became contested as a potential tool to frustrate parliamentary oversight. This shift means that sources from different periods carry very different assumptions about the political stakes of the act.
The civil law meaning — extension of a time period — appears in older continental sources, Roman law scholarship, and Digest-based commentary. Researchers working in civil law jurisdictions or comparative legal history should distinguish this usage from the parliamentary one; conflating them produces significant interpretive error.
In colonial and early American sources, prorogation appears frequently as a prerogative power of colonial governors, who could prorogue or dissolve colonial assemblies. This is a distinct historical application: the American constitutional tradition ultimately rejected executive prorogation power over legislatures in favor of the legislature's control of its own sessions, making American constitutional sources post-1789 largely silent on prorogation as a formal power.
Corpus researchers should note that the Rapalje & Lawrence entry references the 30 & 31 Vict. c. 81 (1867) as the governing English statutory framework of its era. That context is period-specific; later parliamentary practice evolved further.
Historical Dictionary Support
The five source dictionaries show substantial agreement on the core parliamentary definition and share a common lineage, with Black's (1st and 2nd editions) and Rapalje & Lawrence drawing nearly identical text from Wharton, and Bouvier and Burrill citing Blackstone's Commentaries (1 Bl. Com. 186–187). This convergence is strong but reflects a primarily English constitutional lens.
All sources note the adjournment/prorogation distinction, and the Bouvier entry most crisply states it: adjournment continues the session day to day; prorogation continues it from one time to another. This remains the operative distinction in parliamentary law today.
The civil law meaning is preserved in Black's and Bouvier, both citing Digest 2.14.27.1 — a real Roman law source — for the time-extension usage. This cross-tradition acknowledgment is noteworthy but receives minimal elaboration in any source, suggesting it was treated as secondary and technical rather than doctrinally significant in the Anglo-American context.
What the historical dictionaries largely miss: the political and constitutional controversy that the prorogation power could generate. These sources treat the term as a procedural descriptor, not a site of constitutional conflict. That gap reflects their era; researchers studying more recent constitutional developments will need to look beyond these dictionary sources.
Jurisdictional Note
In Commonwealth jurisdictions (United Kingdom, Canada, Australia), prorogation remains a formal constitutional power exercised by the Crown or its representative, and its scope and limits have been the subject of significant modern judicial and parliamentary attention. In the United States, there is no equivalent executive power over Congress; the closest analogue is the President's limited power under Article II, Section 3 to adjourn Congress in the event of a disagreement between the Houses, a power that has rarely if ever been exercised.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Parliamentary Procedure; Royal Prerogative; Legislative Sessions and Adjournment.