What does og stand for?

Ogee - Construction term (MIST)

Oh Gee (AD)

Oil Gland (AD)

Old Girl (AD)

On Ground (AD)

On Guard (AD)

Original Gum (AD)

Air Guadeloupe - ICAO designator (AD)

Guelph Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Obergericht - Court of Appeal - German (DLA)

Oberstes Gericht - Supreme Court - German

Object Glass (MSA)

Obscure Glass

Observation Group (SAUS)

Obstetrics-Gynecology - Medicine

Occlusogingival - Dentistry

Ocean Going (SAUS)

Octyl Glucoside - Organic chemistry

Oesterreichische Galerie - Austrian Gallery (AD)

Offenburg - German license plate city code

Offensive Guard - Football

Off-Gas - Nuclear energy (NRCH)

Office of Geography - Functions transferred to Geographic Names Division of Army Topographic Command - Department of the Interior

Officer of the Guard - Army

Official Gazette - PTO - A publication (AAGC)

Ogasawara Trench

Ogden Corp. - NYSE symbol (SPSG)

Ogdensburg - Diocesan abbreviation - New York (TOCD)

Ogee - A molding - Architecture (ROG)

Oil Gauge

Oil Glands - In propeller shaft

Old Gaelic (AD)

Old Georgian - Linguistics (IEL)

Old German - Language, etc.

Old Girl - A wife - Slang

Old Greasybeard: Tales from the Cumberland Gap - A publication

Old Greek (SAUS)

Old Growth - USDA Forest Service (ALAC)

Oligodendrocyte (DMAA)

Olive Green - Army (ADDR)

Olympic Games

Ongoing (ADA)

On Grade (DAC)

On Ground - Aviation

Openly Gay - An association (BUAC)

Operational Group - World War II

Operation Greenhouse - Atomic weapons testing

Operations Guide (VLIE)

Optical Generation (SAUS)

Optical Glass (SAUS)

Optic Ganglion

Orange Green - Stain - Medicine

Ordinary Goods (SAUS)

Organic Gardening - A publication

Organic Geochemistry (SAUS)

Organisation Gestosis - Basel, Switzerland (EAIO)

Organize - Telegraphy (PCTE)

OR Gate - Electronics (ECII)

Orientation Group - Air Force

Original Gangster (ODA)

Original Gravity (BARN)

Original Gum - Philately

Orogastric - Feeding - Gastroenterology (DAVI)

Osage - NCIC Indian nation code (NCIC)

Outdoor Girl - Max Factor cosmetic line

Outer Gimbal

Outgoing (VLIE)

Outguard (SAUS)

Output Gate - Computer science (IAA)

Outside Guard

Outside Guardian - Freemasonry (ROG)

Oxygen Gage (NAKS)

Oxygen Gas Process (SAUS)

Oxygen Gauge (NASA)

Zero Gravity