Definition
Latin phrase meaning "shows to you." In old English pleading, the formal words of commencement with which a demandant opened his count in a real action. The phrase functioned as a term of art, announcing to the court that the plaintiff was presenting his claim, and its use was a matter of prescribed form rather than substantive content.
Why It Matters in Research
This term is a marker of archaic real action pleading and will appear almost exclusively in medieval and early modern English legal sources, writs, and the procedural manuals that governed them. Researchers encountering *ostendit vobis* in primary sources should understand that they are looking at the formal shell of a count in a real action — the kind of pleading associated with the recovery of land — not a substantive legal argument. The phrase carries no independent legal weight; it is purely ceremonial scaffolding.
The primary reference point in historical sources is Fleta, the late thirteenth-century Latin treatise on English common law (Book 5, Chapter 38, Section 2), which records the phrase in the context of proper count-forms. Researchers working in early English plea rolls, year books, or procedural manuals should be alert to *ostendit vobis* as a signal that the document is structured around a formal count. By the time legal Latin was abolished in English courts (1731, under the Administration of Justice Act), phrases like this had already become fossils — surviving in treatises and form books rather than live pleading.
For Law Mind corpus researchers, this term is unlikely to appear in American legal materials at all. Real actions as a procedural category were never fully transplanted into American common law, and the formal Latin count-openings associated with English real actions did not survive the transition. Any appearance of *ostendit vobis* in American sources is almost certainly a learned reference back to English practice or a quotation from a historical English source.
Historical Dictionary Support
Black's (1st and 2nd editions) and Burrill's Law Dictionary are in complete agreement: *ostendit vobis* means "shows to you" and was the formal opening of a demandant's count in old pleading. All three sources cite Fleta, Book 5, Chapter 38, Section 2 as authority, and none of them elaborate beyond that citation. The brevity of these entries is itself instructive — by the time these dictionaries were compiled, the phrase was already a pure historical artifact requiring no more than a sentence of explanation. None of the standard historical dictionaries situate the phrase within the broader taxonomy of real actions or explain the procedural context in which the count appeared; researchers needing that context must turn to Fleta directly or to Blackstone's Commentaries and other treatments of the old real actions.