✔O-S Medical Abbreviations
ss
a half
p
after
p.c.
after meals
Sb
antimony
q.p.
as much as desired
q.s.
as much as needed
q.l.
as much as wanted
q.v.
as much as you please
p.r.n.
as needed
Pco2
carbon dioxide pressure
OU
each eye
q.o.d.
every other day
q.i.d.
four times a day
semih.
half an hour
pH
hydrogen ion concentration
s.o.s.
if necessary
part. vic
in divided doses
PD
interpupillary distance
Pb
lead
O.S.
left eye
st.
let it stand
S
mark
P, p
melting point
os
mouth
S/P
no change after
Ra
radium
RA
rheumatoid arthritis
O.D.
right eye
RE
right eye
SC, sc, s.c.
subcutaneous
s.q.
subcutaneous
Sx
symptoms
per
through or by
p.r.
through the rectum
p.v.
through the vagina
Sn
tin
s
without
Sig.
write on label