Definition
A Latin phrase meaning "in exchange." In excambio functioned as a formal term of art appearing in old deeds of exchange — the operative words signaling that a conveyance of land was made not by gift or sale but by mutual exchange between parties, each granting property to the other as reciprocal consideration.
Common Confusion
In excambio should not be confused with excambium (or escambium), the noun form denoting the transaction of exchange itself, or with the related writ of excambium. In excambio is the prepositional phrase appearing in the body of the deed as words of conveyance; excambium names the legal institution or the subject matter of the transaction.
Why It Matters in Research
This term appears almost exclusively in historical English land records, particularly deeds predating the widespread adoption of modern conveyancing forms. Researchers encountering in excambio in a document can treat it as a reliable marker that the instrument effects a mutual exchange of land rather than a unilateral grant. This distinction matters because exchanges of land carried distinct procedural requirements and legal consequences under the common law — including the rule that both parcels exchanged had to be of equal value, at least in theory, and that warranty obligations ran differently than in a simple feoffment.
In practical corpus research, in excambio is unlikely to surface outside medieval or early modern primary sources, form books, and the dictionaries and symboleographies that catalogued conveyancing practice. Its presence in a document is itself a dating clue: the phrase belongs to an era of formal verbal requirements in deed-making, when specific Latin phrases were necessary to accomplish specific legal effects. Researchers working in post-colonial American records will encounter it only rarely, and then typically in instruments modeled on older English forms or in learned commentary reproducing historical precedents.
The term also signals a connection to the broader taxonomy of common law conveyances — feoffment, grant, lease, release, surrender, exchange — each of which had its own operative words. Understanding in excambio as the exchange-specific phrase helps researchers map a document against that taxonomy.
Historical Dictionary Support
Black's Law Dictionary (both the first and second editions) treats in excambio identically and minimally: "In exchange. Formal words in old deeds of exchange." Burrill's Law Dictionary matches this definition and adds the only substantive citation in any of the three sources — a reference to William West's Symboleographia, part 1, lib. 2, sect. 513, a late sixteenth-century English form book that was a standard reference for conveyancing practice. That citation anchors the phrase firmly in the tradition of learned English conveyancing literature.
The consistency across all three dictionaries reflects the narrow, technical function of the term: there was nothing to dispute. In excambio did one job in one context, and the historical dictionaries record that job faithfully. What they do not address — and what researchers should note — is the substantive law of exchange that the phrase invoked: the requirement of equal value, the effect of entry and warranty, or the distinction between an exchange and a bargain and sale. For those questions, the dictionaries are silent, and researchers must turn to Coke's commentary, Blackstone's Commentaries, or early treatises on conveyancing.
Jurisdictional Note
The phrase is a product of English common law conveyancing and has no ongoing operational role in any modern jurisdiction. American courts and land records adopted and then discarded formal Latin conveyancing terms through the eighteenth and nineteenth centuries. Researchers working in American title chains will rarely encounter in excambio, but when they do, English common law sources govern interpretation.