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What does p.o. [Lat.: per os, per orem] mean? - Definition of p.o. [Lat.: per os, per orem] - p.o. [Lat.: per os, per orem] stands for by mouth. By AcronymsAndSlang.com
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Common Medical Abbreviations | PO, R/T, RRR, QNS, Q, RLL & QD - Video & Lesson Transcript | Study.com
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