Dictionary
po
abbreviation
Definition of PO
by mouth; orally
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Origin of PO
Latin per os
Po
symbol
Definition of PO
polonium
PO
abbreviation
Definition of PO
1
petty officer
2
postal order
3
post office
4
purchase order
Other Postal Terms
Po
geographical name \ˈpō\
Definition of PO
river 405 miles (652 kilometers) N Italy flowing from slopes of Mt. Viso E into the Adriatic through several mouths
Variants of PO
Po or ancient Pa·dus \ˈpā-dəs\
Medical Dictionary
po
abbreviation
Medical Definition of PO
per os—used especially in writing prescriptions
Learn More About PO
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