The Probert Encyclopaedia of Abbreviations

O

O is an abbreviation for Ohio
O is an abbreviation for Oxygen

O & A

O & A is an abbreviation for Orbit and Attitude
Research O & A

O & C

O & C is an abbreviation for Operation and Checkout
Research O & C

O & M

O & M is an abbreviation for Operation and Maintenance
O & M is an abbreviation for Outline and Mounting
Research O & M

O & S

O & S is an abbreviation for Operation and Support
Research O & S

O/A

O/A is an abbreviation for Orbit/Attitude
Research O/A

O/D

O/D is an abbreviation for Operational Difficulty
Research O/D

O/P

O/P is an abbreviation for Output Power
Research O/P

OA

OA is an abbreviation for Office Automation
OA is an abbreviation for Overeaters Anonymous
OA is an abbreviation for Optical Augmentation
Research OA

OAB

OAB is an abbreviation for Outer Air Battle
Research OAB

OABM

OABM is an abbreviation for Outer Air Battle Missile
Research OABM

OAMP

OAMP is an abbreviation for Optical Airborne Measurement Program
Research OAMP

OAMS

OAMS is an abbreviation for Orbital Attitude and Manoeuvring System
Research OAMS

OAO

OAO is an abbreviation for Orbiting Astronomical Observatory
Research OAO

OAP

OAP is an abbreviation for Offset Aim Point
OAP is an abbreviation for Old Age Pensioner
Research OAP

OARS

OARS is an abbreviation for On-Focal-Plane Array Signal Processing

OART

OART is an abbreviation for Office of Advanced Research and Technology
Research OART

OAS

OAS is an abbreviation for Organization of American States
OAS is an abbreviation for Offensive Air Support
OAS is an abbreviation for Offensive Avionics System
OAS is an abbreviation for Orbiter Aerofight Simulator
Research OAS

OASD

OASD is an abbreviation for Office of the Assistant Secretary of Defence
Research OASD

OASIS

OASIS is an abbreviation for Operation Application of Special Intelligence System
Research OASIS

OAST

OAST is an abbreviation for Office of Aeronautics and Space Technology
Research OAST

OASYS

OASYS is an abbreviation for Obstacle Avoidance System
Research OASYS

OAT

OAT is an abbreviation for Outside Air Temperature
Research OAT

OATS

OATS is an abbreviation for Office Automation Technology and Services
OATS is an abbreviation for Optical Augmentation Target Screen
OATS is an abbreviation for Orbit and Attitude Tracking Subsystem
Research OATS

OAU

OAU is an abbreviation for Organization of African Unity
Research OAU

OBA

OBA is an abbreviation for Optical Barrel Assembly
Research OBA

OBC

OBC is an abbreviation for On Board Computer
Research OBC

OBDH

OBDH is an abbreviation for On Board Data Handling
Research OBDH

OBE

OBE is an abbreviation for Officer of the Order of the British Empire
Research OBE

OBIFCO

OBIFCO is an abbreviation for On Board In Flight Checkout
Research OBIFCO

OBOGS

OBOGS is an abbreviation for On Board Oxygen Generating System
Research OBOGS

OBS

OBS is an abbreviation for Omni Bearing Selector
Research OBS

OBSS

OBSS is an abbreviation for Operations Briefing Support System
Research OBSS

OC

OC is an abbreviation for Order of Canada
OC is an abbreviation for Off Centre
OC is an abbreviation for Officer Candidate
OC is an abbreviation for On Centre
OC is an abbreviation for On Course
OC is an abbreviation for Output Controller
Research OC

OCB

OCB is an abbreviation for Operations Coordinating Board
Research OCB

OCC

OCC is an abbreviation for Operations Command Centre
OCC is an abbreviation for Operations Control Centre
Research OCC

OCCM

OCCM is an abbreviation for Optical Counter Counter-Measure
Research OCCM

OCDM

OCDM is an abbreviation for Office of Civil Defence and Mobilization
Research OCDM

OCE

OCE is an abbreviation for Orbital Computations Engineer
Research OCE

OCI

OCI is an abbreviation for Out of City Indicator
Research OCI

OCLC

OCLC is an abbreviation for Online Computer Library Centre, Inc.
Research OCLC

OCLI

OCLI is an abbreviation for Optical Coating Laboratories, Incorporated
Research OCLI

OCM

OCM is an abbreviation for Ocean Colour Monitor
OCM is an abbreviation for Optical Countermeasure
Research OCM

OCO

OCO is an abbreviation for Object Code Only
Research OCO

OCP

OCP is an abbreviation for Operational Computer Program
OCP is an abbreviation for Overcharge Protection
Research OCP

OCR

OCR is an abbreviation for Operational Concept Review
OCR is an abbreviation for Optical Character Reader
OCR is an abbreviation for Optical Character Recognition
Research OCR

OCS

OCS is an abbreviation for Officer Candidate School
OCS is an abbreviation for Optical Contrast Seeker
OCS is an abbreviation for On Company's Service
Research OCS

OCST

OCST is an abbreviation for Office of Commercial Space Transportation
Research OCST

OCTV

OCTV is an abbreviation for Open Circuit Television
Research OCTV

OCU

OCU is an abbreviation for Office Channel Unit
OCU is an abbreviation for Operational Capability Upgrade
Research OCU

OCXO

OCXO is an abbreviation for Oven Controlled Crystal Oscillator
Research OCXO