Meanings
prn1
phrase
- abbreviationmedicineAbbreviation of pro re nata
“‘My return fare was £171. 6s. 0d. and I enclose the counterfoil. I have no record of other expenses; the major items were chilled liquid sedatives on the flight home at 55 cents a shot. Although taken prn, the last dose I remember is the fourth.”
1988, E[dward] J[ames] Moran Campbell, Not Always on the Level, [London]: British Medical Journal, →ISBN, page 182
PRN2
phrase
- abbreviationmedicineAbbreviation of pro re nata.
Synonyms & antonyms
adverbaccording to need (physicians use PRN in writing prescriptions)
Similar
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
prn. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/prn
MLA
“prn.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/prn. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “prn,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/prn.
Source: prn on Wiktionary, CC BY-SA 4.0.