Medical Dictionary

per os

adverb \ ˌpər-ˈōs \

medical Definition of per os

: by way of the mouth
  • medication administered per os
  • infection per os

Seen and Heard

What made you want to look up per os? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!