Found 18,023 abbreviations starting with O:

O2

Oxygen

Miscellaneous » Aircraft & Aviation

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O2 SAT

Oxygen SATurated hemoglobin

Medical » Physiology

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O20

Kingdon Airpark, Lodi, California USA

Regional » Airport Codes

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O22

Columbia Municipal Airport, Columbia, California USA

Regional » Airport Codes

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O26

Lone Pine Airport, Lone Pine, California USA

Regional » Airport Codes

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O28

Willits Municipal Airport, Ells Field, Willits, California USA

Regional » Airport Codes

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O2A

Order-to-Activation

Business » General

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O2I

Object-Oriented Interface

Computing » Software

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O2L

Oxygen level in 'spacecraft, spacelab:

Academic & Science

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O2L

ON2LONDON

International

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O2L

Our Second Life

Internet

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O2O

Observe to Obey

Governmental » Military

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O2T

Oxygen Thief

Miscellaneous » Funnies

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O3

Ozone

Governmental » Transportation

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O3

Officer grade: Lieutenant or Captain

Governmental » Military

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O35

HOLLIS Municipal Airport, Hollis, Oklahoma

Regional » Airport Codes

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O3O

o3o

Community » Music

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O3O

O3o

Community » Media

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O3O

o3o

Internet » Emoticons

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O4

Officer grade: Lieutenant Commander or Major

Governmental » Military

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O4

Officer grade: Commander or Lieutenant Colonel

Governmental » Military

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O4

Officer grade: Captain or Colonel

Governmental » Military

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O41

Watts- Woodland Airport, Woodland, California USA

Regional » Airport Codes

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O42

Woodlake Airport, Woodlake, California USA

Regional » Airport Codes

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O46

Weed Airport, Weed, California USA

Regional » Airport Codes

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