p.o.

(in prescriptions) by mouth.

Origin of p.o.

From the Latin word per ōs

Words nearby p.o.

p.j.'s, p.l., p.m., p.m.g., p.m.l., p.o., p.o.'d, p.o.d., p.o.p., p.o.r., p.o.s.

Definition for p.o. (2 of 2)

P.O.

parole officer.
petty officer.
postal (money) order.
post office.