Found 2 items, similar to pro re nata.
English → English (WordNet) Definition: pro re nata pro re nata adv : according to need (physicians use PRN in writing prescriptions); “add water as needed” [syn: as needed, as required, PRN]
English → English (gcide) Definition: Pro re nata Pro \Pro\, prep. [L.; akin to prae before, Gr. ?, and E. for. See For, prep., and cf. Prior, a.] A Latin preposition signifying for, before, forth. [1913 Webster] Pro confesso [L.] (Law), taken as confessed. The action of a court of equity on that portion of the pleading in a particular case which the pleading on the other side does not deny. Pro rata. [L. See Prorate.] In proportion; proportion. Pro re nata [L.] (Law), for the existing occasion; as matters are. [1913 Webster]