Medical Definition of NPO

nothing by mouth

History and Etymology for NPO

Latin nil per os

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Dictionary Entries near NPO

NP

NPH insulin

NPN

NPO

NPT

nr

NR

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Cite this Entry

“NPO.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/NPO. Accessed 27 Oct. 2020.

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