Abbreviation List – O

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Important List of abbreviations beginning of the letter "O" For all school, college and university students. This abbreviation list is also very important and effective for various kinds of competitive examinations and viva-voce and specially for BCS and Admission test. 

Click on a letter to see the abbreviations beginning with that letter.

Abbreviations List:  

  A । B । C । D । E । F । G । H । I । J । K । L । M । N । O । P । Q । R । S । T । U । V । W । X । Y । Z  




Abbreviation List - O


OAP = Organization of Arab Petroleum
OAS = Organization of American States
OC = Officer in Charge / Officer Commanding
OCAB = Overseas Correspondent Association of Bangladesh
OFDA = Office of US Foreign Disaster Assistance
OIC = Organization of Islamic Conference
OANA = Organization of Asia-Pacific News Agency
OAU = Organization of African Unity
OCR = Ordinary Common Resource
OCAS = Organization of Central American States
OECD = Organization of Economic Cooperation and Development
OECD = Organizational for Economic Corporation and Development
ORT = Oral Dehydration Treatment
OPEC = Organization of Petroleum Exporting Countries
OUP = Oxford University Press
Obad. = Obadiah (in the Bible)
Obed.  = obedience
obj. = object, objective
Obj. = object(s)
Observ. = observation(s)
Obstet. = obstetric(s)
Oceanogr. = oceanography, oceanographic(al)
Oct. =  October
obl. = oblique
obs. = obsolete
Obs. = obsolete
OE = Old English (in dates)
O.E.D. = Oxford English Dictionary
Off. = official, office
Offic. = official
Ophthalm. = ophthalmology
Ophthalmol. =  ophthalmology, ophtalmologic(al)
opp. =  opposed (to), the opposite (of)
Oppress. = oppression
Org. =  organic
Org. Chem. =   organic chemistry
Orig. = original
Orkn. = Orkney
Ornith.  = ornithology
Ornithol. = ornithology, ornithologic(al)
Orthogr. = orthography
Oxf. =  Oxford
Oxon.   = Oxfordshire



Click on a letter to see the abbreviations beginning with that letter.

Abbreviations List:  

  A । B । C । D । E । F । G । H । I । J । K । L । M । N । O । P । Q । R । S । T । U । V । W । X । Y । Z  

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