A Quo

Lat. From which. A term used, with the correlative ad quern, (to which,) in expressing the computation of time, and also of distance in space. Thus, dies a quo, the day from which, and dies ad qv.em, the day to which a period of time is computed. See Dies a quo, From, So, terminus a quo, the point or limit from which, and terminus ad quern, the point or limit to which, a distance or passage in space is reckoned. See Terminus, Prom, Applied also to courts, as expressive of their relation one to another. Thus, a court or judge a quo is one from which an appeal is taken, (the court below,) and a court ad quern is one to which an appeal is taken, (the court above.) This use of the term is common in the civil and canon law.

4 Reeves' Hist. Eng. Law, 33.

Halifax Anal, b.

3, c. 11, n. 34. 6 Martin's (La.) Rep, 520.