(US, medicine) per os; via the mouth; orally.
(US, medicine) per os; via the mouth; orally.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(chiefly, UK) To speak out something that is written, to turn something written into something oral.