Dictionary

prn

abbreviation

Definition of PRN

as needed; as the circumstances require

Origin of PRN

Latin pro re nata
Medical Dictionary

prn

abbreviation

Medical Definition of PRN

as needed; as the circumstances require—used in writing prescriptions

Origin of PRN

Latin pro re nata

Browse

Next Word in the Dictionary: prntrPrevious Word in the Dictionary: Pr ManAll Words Near: prn
July 01, 2015
precarious Hear it
not certain, secure, or steady
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears