What is the meaning of pro re nata?

According to need (physicians use PRN in writing prescriptions. )
- usage: "add water as needed"
- synonyms: as needed, as required, PRN

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APA	WordNet. (2010). pro re nata. Retrieved September 21, 2026, from http://smartdefine.org/pro_re_nata/definitions/1252972
Chicago	WordNet. 2010. "pro re nata" http://smartdefine.org/pro_re_nata/definitions/1252972 (accessed September 21, 2026).
Harvard	WordNet 2010, pro re nata, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/pro_re_nata/definitions/1252972>.
MLA	WordNet. "pro re nata" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/pro_re_nata/definitions/1252972>

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