nil per os

== Translingual == === Etymology === From Latin nīl (“nothing”) + per (“by means of”) + ōs (“mouth”), literally “nothing by mouth”. === Phrase === nil per os (medicine) Nothing by mouth. Synonym: NPO (initialism) Antonyms: per os, PO == English == === Etymology === From Latin nīl (“nothing”) + per (“by means of”) + ōs (“mouth”), literally “nothing by mouth”. === Phrase === nil per os (medicine) Nothing by mouth: Nothing may be eaten or drunk. Synonyms: NPO (initialism), nil by mouth Antonyms: per os, PO