Definition of prn

as needed; as the circumstances require

History and Etymology for prn

Latin pro re nata

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Dictionary Entries near prn

PRK

prm

Pr Man

prn

prntr

pro

PRO

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Cite this Entry

“Prn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prn. Accessed 16 May. 2021.

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Medical Definition of prn

as needed; as the circumstances require used in writing prescriptions

History and Etymology for prn

Latin pro re nata

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