Definitions
from The Century Dictionary.
- For some contingency that arises unexpectedly or out of due course.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adverb according to need (physicians use PRN in writing prescriptions)
Etymologies
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Examples
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bilby commented on the word pro re nata
"It was formerly left to the crown to summon, pro re nata, the most flourishing towns to send representatives to parliament." - Blackstone, 1765.
December 19, 2007
artoparts commented on the word pro re nata
Rx abbreviation prn = as needed.
February 18, 2009