What is the meaning of per os?

(latin) per os (p.o.) - through the mouth

Carl Meissner
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APACarl Meissner. (2011). per os. Retrieved September 20, 2026, from http://smartdefine.org/per_os/definitions/1965378
ChicagoCarl Meissner. 2011. "per os" http://smartdefine.org/per_os/definitions/1965378 (accessed September 20, 2026).
HarvardCarl Meissner 2011, per os, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/per_os/definitions/1965378>.
MLACarl Meissner. "per os" 25 May 2011. Web. 20 September 2026. <http://smartdefine.org/per_os/definitions/1965378>