Found 17,756 abbreviations starting with O:

Skip to:OOAOBOC - OEOF - OHOI - OKOL - ONOO - OQOR - OTOU - OWOX - OZ

O.o

Confusion

Internet » Emoticons

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O.O.D.

Operations Officer of the Day

Governmental » Military

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O.P.

osmotic pressure

Medical » Physiology

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o.p.d.

once per day

Medical » Prescription

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O.R.N.

Operating Room Nurse

Medical » Hospitals

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o.s.

oculus sinister - left eye

Medical » Prescription

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O.S.

left eye (ocularis/oculus sinister (Lat.)

Medical

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O.T.R.

Occupational Therapist Registered

Business » Occupation & Positions

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o.u.

oculus uterque - both eyes

Medical » Prescription

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O/A

Open Account

Business » International Business

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o/a

on admission

Medical » Hospitals

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o/a

old age

Medical » Physiology

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o/a

on account

Business » General

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o/A

on arrival

Miscellaneous

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O/B

Onboard

Governmental » NASA

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O/B

Operational Base

Governmental » NASA

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O/B

Outboard

Governmental » Military

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o/b

overboard

Miscellaneous » Ship Types

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o/b

outboard

Miscellaneous » Ship Types

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o/b

on board

Business » General

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o/b

overboard

Miscellaneous

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O/C

Observer/Controller

Governmental » Military

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O/C

Observer/Collector

Governmental » Military

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O/C

Operations Critical

Governmental » NASA

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O/D

Overdrive

Governmental » Transportation

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