ଅର୍ଥ : According to need (physicians use PRN in writing prescriptions).
ଉଦାହରଣ :
Add water as needed.
ସମକକ୍ଷ : as needed, as required, prn
Pro re nata ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Pro re nata ka matlab kya hota hai?