Common medical terminology (abbreviations)

a or a.

before

a.c

before meals

bid

twice daily

cc

cubic centimeter

d

day

fl

fluid

g

grams

gtt

drop (s)

h or hr.

hour

i.d.

intradermic (administering a substance into the dermis)

i.m.

intramuscular (administering a substance into the tissues of the muscle )

inj.

injection

i.v.

intravenous (medical technique administering substance into the bloodstream - within a vein)

m

morning

n

night

npo

nothing by mouth

p.

after

p.c.

after meals

p.o. or per os

orally

prn

as needed

q

each

qd

every day

qh

every hour

qid

four times a day

qod

every other day

qoh

every other hour

qs

as much as needed

R. or PR.

rectally

Rx

prescription

s.l.

sublingual (administering medication under the tongue)

stat.

immediately

tid

three times a day

ut dict

as directed