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Adverb: pro re nata
  1. According to need (physicians use PRN in writing prescriptions)
    "add water pro re nata"
    - as needed, as required, PRN

Encyclopedia: Pro re nata

Nearest

prize winner
prizefight
prizefighter
prizewinning
PRN
pro
pro-
pro bono
pro forma
pro rata
pro re nata
pro tem
pro tempore
proa
proaccelerin
proactive
pro-am
pro-American
probabilism
probabilist
probabilistic