s means sine - without usually written with a bar on top of the "s" in Prescription
Similar to s
p.m. - post meridiem - evening or afternoonp.o. - per os - by mouth or orally
p.r. - per rectum - by rectum
per - per - by or through
pig./pigm. - pigmentum - paint
PRN, prn - pro re nata - as needed
pulv. - pulvis - powder
View all in Prescription