prn

1. 1.

   according to need (physicians use PRN in writing prescriptions)

   “add water as needed”

   Synonymsas neededas requiredpro re nata

Questions about prn

What does prn mean?

prn means "according to need (physicians use PRN in writing prescriptions)".

How many syllables are in prn?

prn has 1 syllable under the regular spelling rules, and is not divided further. It is not in the CMU Pronouncing Dictionary, so that comes from how the word is written rather than from a recorded pronunciation, and no stress or phonetic transcription is claimed for it.

What is another word for prn?

Close synonyms include as needed, as required, pro re nata. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.