p.r.n.
abbreviation
(in prescriptions) as the occasion arises; as needed.
Origin of p.r.n.
1From Latin prō rē nāta
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for prn
prn
abbreviation for(in prescriptions)
pro re nata
Origin of prn
1Latin: as the situation demands; whenever needed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Browse