P.r.n.

phrase

phrase ·Rare ·Advanced level

Definitions

Phrase
  1. 1
    Abbreviation of pro re nata. abbreviation, alt-of

    "For example, apart from being given three to four times a day on a time-contingent basis, ibuprofen or naproxen or most other NSAIDs may be taken p.r.n. (as occasion rises) when pain is troublesome and omitted at other times."

Example

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"For example, apart from being given three to four times a day on a time-contingent basis, ibuprofen or naproxen or most other NSAIDs may be taken p.r.n. (as occasion rises) when pain is troublesome and omitted at other times."

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.