a.c
Before meals
p.c
After meals
Ad lib
At pleasure; freely
AM
Morning
PM
Evening
Disc
Discontinue
ASAP
As soon as possible
ACT
Arount the Clock
NTE
Not to esceed
NMT
Not more than
noct.
At night/evening
Non rep
Do not repeat
PRN
As needed
STAT
Immediately
s.o.s
Only when needed