Found 11,847 abbreviations starting with O:

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O-Day

Off-Load Day

Governmental » Military

   
O-EA

O-flex Energy Absorbing

Business » Products

   
O-M

opsoclonus-myoclonus

Medical » Physiology

   
O-NAV

Onboard Navigation

Governmental » NASA

   
o-t-c

over-the-counter

Medical » Prescription

   
O.A.

Order of Australia

Regional » Australian

   
O.A.M.

Medal of the Order of Australia

Regional » Australian

   
O.C.G.A.

Official Code of Georgia Annotated

Community » Educational

   
O.D.

Doctor of Optometry

Academic & Science » Academic Degrees

   
O.o

Confusion

Internet » Emoticons

   
O.O

Surprised. Confused. Shocked.

Internet » Emoticons

   
O.O.D.

Operations Officer of the Day

Governmental » Military

   
O.P.

osmotic pressure

Medical » Physiology

   
o.p.d.

once per day

Medical » Prescription

   
O.R.N.

Operating Room Nurse

Medical » Hospitals

   
O.S.

left eye (ocularis/oculus sinister (Lat.)

Medical

   
o.s.

oculus sinister - left eye

Medical » Prescription

   
O.S.

Old Style, as in Old Style Date

Community » Genealogy

   
o.u.

oculus uterque - both eyes

Medical » Prescription

   
o/a

old age

Medical » Physiology

   
o/a

on account

Business » General

   
o/a

on admission

Medical » Hospitals

   
O/A

Open Account

Business » International Business

   
O/B

Onboard

Governmental » NASA

   
O/B

Operational Base

Governmental » NASA

   

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