common abbreviations and symbols
Terms
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- a
- before
- a.c.
- before meals
- a.m.
- before noon
- AD
- right ear
- ad lib.
- as desired
- amt
- amount
- aq
- water
- AS
- left ear
- AU
- both ears
- B
- bilateral
- b.i.d.
- twice a day
- C
- Celsius
- d
- day
- h
- hour
- h.s.
- a bedtime
- m
- murmur
- noc.
- night
- NPO
- nothing by mouth
- OD
- right eye
- OS
- left eye
- OU
- both eyes
- p
- after
- p.c.
- after meals
- p.m.
- after noon
- p.o.
- by mouth
- p.r.n.
- as needed
- per
- by or through
- PR
- through rectum
- PV
- through vagina
- q
- every
- q d
- every day
- q h
- every hour
- q.i.d.
- four times a day
- q.n.s.
- quantity not sufficient
- q.o.d.
- every other day
- q.s.
- quantity sufficient
- q2h
- every 2 hours
- Rx
- perscription
- s
- without
- Sig:
- instruction to the patient
- ss
- one-half
- STAT
- immediately
- t.i.d.
- three times a day
- w.a.
- while awake
- wk
- week
- yr
- year