Definition
A Latin adverbial phrase meaning "in this" or "in respect to this." Used in legal writing and judicial opinions to signal a specific, limited reference — directing the reader's attention to a particular point, matter, or proposition just stated or about to follow. It functions as a precise locator within an argument or text, roughly equivalent to the modern English phrases "on this point," "in this regard," or "as to this matter."
Why It Matters in Research
In hoc appears most often in older judicial opinions, legal briefs, and treatises as a shorthand signal that the writer is confining a statement, exception, or qualification to a specific, narrow issue. When encountered in a historical source, it should be read as a limiting modifier — the claim or rule it accompanies is not being stated generally but only as applied to the immediate subject under discussion. Misreading it as decorative Latin filler can cause a researcher to over-read the scope of a holding or proposition.
Because the phrase is brief and easily overlooked, it sometimes goes unindexed in digests and secondary compilations. Corpus researchers working through nineteenth- and early twentieth-century opinions should treat in hoc as a substantive qualifier rather than mere rhetorical ornament. Its presence often signals that the author is distinguishing the case at hand from a broader rule — a distinction that may not be captured in headnotes or summaries.
Researchers should also note that in hoc frequently appears as a component within longer Latin constructions. In hoc casu ("in this case"), in hoc loco ("in this place"), and in hoc sensu ("in this sense") are common extensions that carry the same limiting function with added specificity. Bouvier's pairing of in hoc with the related phrase in hunc modum ("after this manner") is instructive: both phrases share a deictic, pointing function in legal prose, and the two sometimes appear in proximity in older pleadings and instrument drafting.
Historical Dictionary Support
The historical sources are in complete agreement and uniformly brief. Black's Law Dictionary (both the first and second editions) renders the phrase identically: "In this; in respect to this." Bouvier's Law Dictionary matches the core translation and adds the companion entry in hunc modum, linking the two phrases by their shared function as directional signals in formal legal Latin. No source expands on usage or provides illustrative examples, which reflects the phrase's status as a utility term — well understood by practitioners trained in Latin legal forms and therefore needing no elaboration. What the historical dictionaries do not address is the interpretive work the phrase performs in context, particularly its role as a limiting or qualifying signal within an argument. That function must be inferred from usage, not from dictionary treatment alone.