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O
- Code
-
Meaning
Language
Themes and places
- OSWA
-
Organizational Systems Wireless Auditor
- OT
-
Office de tourisme
- OT
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Operación Triunfo
- OT
-
Onafhankelijk Toneel
- OT
-
Occupational Therapy
- OT
-
Ordo Teutonicus
- OT
-
Organisation Todt
- OT
-
Ohjelmistotekniikka
= IT | Information Technology | In English
= IT | Informationstechnik | In German
= IT | Inligtingstegnologie | In Afrikaans
= TI | Tecnologia da Informação | In Portuguese
= TI | Tecnoloxías da información | In Galician
= UT | Upplýsingatækni | In Icelandic
= IT | Informationsteknik | In Swedish
= IT | Informacijska Tehnologija | In Slovenian
= IT | Informačné Technológie | In Slovak
= ІТ | Інформаційні технології | In Ukrainian
= ИТ | Информационные технологии | In Russian
= IT | Informa Teknologio | In Esperanto
= TI | Tecnologías de la Información | In Spanish
= IT | Informacinės Technologijos | In Lithuanian
= IT | Informācijas Tehnoloģijas | In Latvian - OT
-
Ordre de Travail
- OT&E
-
Operational Test and Evaluation
- OT/VT
-
Otomatik Tanıma/Veri Toplama
- OTA
-
Operational Trajectory Analysis
- OTA
-
Optical Telescope Assembly
- OTAN
-
Organització del Tractat de l'Atlàntic Nord (www.nato.int)
= NATO | North Atlantic Treaty Organisation | In English
= OTAN | Organizazión d'o Tratau de l'Atlantico Norte | In Aragonese
= OTAN | Organización del Tratáu del Atlánticu Norte | In Asturian
= AFNA | Aozadur Feur-emglev Norzh-Atlantel | In Breton
= OTAN | Organisation du Traité de l'Atlantique Nord | In French
= ন্যাটো | উত্তর আটলান্টিক নিরাপত্তা জোট | In Bengali
= NATO | Οργανισμός Βορειοατλαντικού Συμφώνου | In Greek
= NATO | Nordatlantikvertrag-Organisation | In German
= OTAN | Organización del Tratado del Atlántico Norte | In Spanish
= NATO | Nord-Atlantika Traktat-Organizo | In Esperanto
= NAFO | Noard-Atlantyske Ferdrachsorganisaasje | In Frisian
= OTAN | Organización do Tratado do Atlántico Norte | In Galician
= ნატო | ჩრდილოატლანტიკური თანამშრომლობის ორგანიზაცია | In Georgian
= OTAN | Organização do Tratado do Atlântico Norte | In Portuguese
= OTNA | Organizaciya le Tratatosko le Nordutne Atlantikosko | In Romani
= OTAN | Organizaţia Tratatului Atlanticului de Nord | In Romanian
= NATO | Organisatschoon vun den Noordatlantikverdrag | In Low German
= NAVO | Noord-Atlantische Verdragsorganisatie | In Dutch - OTAN
-
Organizazión d'o Tratau de l'Atlantico Norte (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organización del Tratáu del Atlánticu Norte (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organisation du Traité de l'Atlantique Nord (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organización del Tratado del Atlántico Norte (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organización do Tratado do Atlántico Norte (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organização do Tratado do Atlântico Norte (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTAN
-
Organizaţia Tratatului Atlanticului de Nord (www.nato.int)
= NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA, NAVO (see above)
- OTB
-
Orbiting Tanker Base
- OTC
-
Optical Test Chamber
- OTC
-
Orbiter Test Conductor
The abbreviation OTC (Orbiter Test Conductor) includes the abbreviation TC (Test Conductor).
- OTC
-
Over the Counter
- OTD
-
Operational Technical Documentation
- OTD
-
Orbiter Test Director
- OTDA
-
Office of Tracking And Data Acquisition
- OTE
-
Optical Test and Evaluation
- OTE
-
Orbital Transfer Equipment
- OTEA
-
United States Army Operational Test and Evaluation Agency
- OTEC
-
Operational Test and Evaluation Center
- OTEC
-
Ocean Thermal Energy Conversion
- OTF
-
Operational Time Fraction
- OTF
-
Optical Transfer Function
- OTFE
-
Oscillatory Thermocapillary Flow Experiment
- OTHB
-
Over-The-Horizon Backscatter
- OTI
-
Ordre de Transfert Interne
The abbreviation OTI (Ordre de Transfert Interne) includes the abbreviation TI (Transfert Interne).
- OTJC
-
Ordre du Temple de la Jérusalem Céleste
- OTK
-
Oxidizer Tank
- OTL
-
Office of Technology Licensing
- OTL
-
Online Tamil Lexicon
- OTL
-
OSI (Open Systems Interconnection) Testing Liaison
- OTL
-
Ordnance Test Laboratory
- OTLC
-
Orbiter Time Line Constraint
- OTM
-
Output Transformation Matrix
- OTN
-
Objet Transneptunien
= TNO | Trans-Neptunian Object | In English
= TNO | Transneptunisches Objekt | In German
= TNO | Transneptuna Objekto | In Esperanto
= TNO | Transneptunsk Objekt | In Norwegian
= ТНО | Транснепту́новый объе́кт | In Russian
= NÖC | Neptün Ötesi Cisim | In Turkish - OTNA
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Organizaciya le Tratatosko le Nordutne Atlantikosko (www.nato.int)
= OTAN, NATO, AFNA, ন্যাটো, NAFO, ნატო, NAVO (see above)
- OTNE
-
Objet Transneptunien Extrême
= ETNO | Extreme Trans-Neptunian Object | In English
- OTOS
-
Orbit-To-Orbit Stage
- OTP
-
Omega Translation Process
- OTP
-
Országos Takarékpénztár
- OTP
-
Operational Test Procedure
The abbreviation OTP (Operational Test Procedure) includes the abbreviation TP (Test Procedure).
- OTP
-
Operations Turnaround Plan
- OTP
-
The Old Testament Pseudepigrapha
- OTP
-
Outline Test Plan
The abbreviation OTP (Outline Test Plan) includes the abbreviation TP (Test Plan).
- OTP
-
Organigramme Technique de Projet
Un Organigramme Technique de Projet (OTP) est une représentation hiérarchique du travail à effectuer au cours d’un projet. Par sa structure arborescente (arbre), un OTP organise les phases, les activités, les tâches, les lots de travaux ou les livrables attendus, en les subdivisant jusqu’à atteindre le degré de détail nécessaire à la réalisation du projet.
- OTP
-
One-Time Password
- OTPP
-
Ontario Teachers’ Pension Plan
- OTPS
-
Other Than Personal Services
- OTR
-
Operating Time Record
- OTS
-
Originaltext-Service
- OTS
-
Orbital Test System
- OTS
-
Orbital/Orbital Transfer System
- OTS
-
Ordre du Temple Solaire
- OTT
-
Optional Team Targeting
- OTT
-
Onvoltooid Tegenwoordige Tijd
- OTV
-
Operational Television
The abbreviation OTV (Operational Television) includes the abbreviation TV (Television).
- OTV
-
Orbit Test Vehicle
- OTV
-
Orbital Transfer Vehicle
- OUA
-
Organisation de l'Unité Africaine
- OUG
-
Ordonanţă de Urgenţă a Guvernului
- OUI
-
Office of Urban Initiatives
- OULIPO
-
OUvroir de LIttérature POtentielle
- OUN
-
Organisation del Unit Nationes (https://www.un.org/)
= UN | Unuiĝintaj Nacioj | In Esperanto
= ONU | Organisation des Nations Unies | In French
= ONU | Organizazión d'as Nazions Unitas | In Aragonese
= ААН | Арганіза́цыя Аб'ядна́ных На́цый | In Belarusian
= VN | Verenigde Nasies | In Afrikaans
= ONU | Organización de les Naciones Uníes | In Asturian
= OOH | Организацията на обединените нации | In Bulgarian
= ABU | Aozadur ar Broadoù Unanet | In Breton
= OSN | Organizace Spojených Národů | In Czech
= ПНО | Пĕрлешнĕ Нацисен Организацийĕ | In Chuvash
= ՄԱԿ | Միավորված Ազգերի Կազմակերպություն | In Armenian
= FN | Feriene Naasjes | In Frisian
= UN | United Nations | In English
= NBE | Nazio Batuen Erakundea | In Basque
= ONU | Organizacion de las Nacions Unidas | In Occitan
= UN | Unuiĝinta Naciaro | In Esperanto
= UN | Ujedinjeni Narodi | In Bosnian
= CN | Consociatio Nationum | In Latin
= FN | Forenede Nationer | In Danish
= UN | Unionita Nacioni | In Ido
= ONU | Organizzazione delle Nazioni Unite | In Italian
= KU | Kenedhlow Unys | In Cornish
= ONU | Organització de les Nacions Unides | In Catalan
= ΟΗΕ | Οργανισμός Ηνωμένων Εθνών | In Greek
= ΗΕ | Ηνωμένα Έθνη | In Greek
= ONU | Organización de las Naciones Unidas | In Spanish
= VN | Vereinte Nationen | In German
= VN | Verenigde Naties | In Dutch
= VN | Vereent Natiounen | In Letzeburgesh
= ООН | Организация Oбъединённых Hаций | In Russian
= ONU | Organisacion des Nacions Unies | In Franco-Provençal
= ONZ | Organizacja Narodów Zjednoczonych | In Polish
= BMT | Birlashgan Millatlar Tashkiloti | In Uzbek
= ООН | Організація Об'єднаних Націй | In Ukrainian
= BM | Birleşmiş Milletler | In Turkish
= LHiQ | Liên Hiệp Quốc | In Vietnamese
= OKB | Organizata e Kombeve të Bashkuara | In Albanian
= OSN | Organizácia Spojených národov | In Slovak
= OZN | Organizacija Združenih Narodov | In Slovenian
= УН | Уједињене нације | In Serbian
= FN | Förenta nationerna | In Swedish
= UM | Umoja wa Mataifa | In Swahili
= NU | Nazzioni Uniti | In Sicilian
= ONU | Organizaţia Naţiunilor Unite | In Romanian
= ONU | Organização das Nações Unidas | In Portuguese
= VN | Vereenten Natschonen | In Low German
= ST | Sameindu Tjóðir | In Faroese
= HN | Huñusqa Nasyunkuna | In Quechuan languages
= PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay
= NA | Na Náisiúin Aontaithe | In Irish
= NY | Neteweyên Yekbûyî | In Kurdish
= ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian
= SÞ | Sameinuðu þjóðanna | In Icelandic
= ЕМрО | Еидгылоу Амилаҭқәа Рорганизациа | In Abkhazian
= ДЛО | Дунэе Лъэпкъ Организацие | In Adyghe
= የተ.መ.ድ. | የተባበሩት መንግሥታት ድርጅት | In Amharic
= ЦМГІ | Цолъарал Миллатазул ГІуцІи | In Avar
= BMT | Birləşmiş Millətlər Təşkilatı | In Azerbaijani
= VN | Vaoantn Nationa | In Austro-Bavarian
= JTO | Jongtėniu Tautū Uorganėzacėjė | In Samogitian
= БМО | Берләшкән Милләттәр Ойошмаһы | In Bashkir
= НҮБ | Нэгэдэһэн Үндэһэтэнэй Байгуулга | BXR
= BM | Birleşken Milletler | In Crimean Tatar
= CU | Cenhedloedd Unedig | In Welsh
= ONU | Organización las Nacionis Unías | In Extremaduran
= އ.ދ | އެކުވެރި ދައުލަތްތައް | In Dhivehi
= ÜRO | Ütistünüisi Rahvidõ Organisatsiuun | In Võro
= ÜR | Ütistünüq Rahvaq | In Võro
= YK | Yhdistyneet kansakunnat | In Finnish
= ONU | Organizazion des Nazions Unidis | In Friulian
= ONI | Organizasyon di sé Nasyonzini | In French Guianese Creole
= ONU | Organización das Nacións Unidas | In Galician
= AU | Ny h-Ashoonyn Unnaneysit | In Manx
= UN | United Nations | In Fiji Hindi
= UN | Ujedinjeni narodi | In Croatian
= ENSZ | Egyesült Nemzetek Szervezete | In Hungarian
= ՄԱԿ | Միաւորուած Ազգերու Կազմակերպութիւն | In Western Armenian
= ONU | Organisation del Nationes Unite | In Interlingua
= PBB | Perserikatan Bangsa-Bangsa | In Indonesian
= PBB | Pasarékatan Bangsa-Bangsa | In Javanese
= BMSh | Birlesken Milletler Shólkemi | In Karakalpak
= გაერო | გაერთიანებული ერების ორგანიზაცია | In Georgian
= ЛъЗ | Лъэпкъ Зэгуэтхэр | In Kabardian
= БМО | Бирлешген Миллетлени Организациясы | In Karachay-Balkar
= ӦВК | Ӧтувтчӧм Войтыръяслӧн Котыр | In Komi
= БУУ | Бириккен Улуттар Уюму | In Kirghiz
= СМТ | Садхьанвай миллетрин тешкилат | LEZ
= NU | Nasiones Unida | In Lingua Franca Nova
= VN | Verenigde Naties | In Limburgish
= ÜNU | Urganizaziun di Naziun Ünii | In Lombard
= LIBIMO | Lisangá lya Bikólo bya Mokili mobimba | In Lingala
= LBM | Lisangá lya Bikólo bya Molɔ́ngɔ́ | In Lingala
= JTO | Jungtinių Tautų Organizacija | In Lithuanian
= ANO | Apvienoto Nāciju Organizācija | In Latvian
= PBB | Pasarékatan Bangsa-Bangsa | In Bilma Kanuri
= FM | Firenena Mikambana | MLG
= ИНО | Иктыш ушнышо Наций-влак Организаций | MHR
= PBB | Pasarikatan Banso-Banso | MIN
= ООН | Организација на обединетите нации | In Macedonian
= НҮБ | Нэгдсэн Үндэстний Байгууллага | In Mongolian
= संरा | संयुक्त राष्ट्रे | In Marathi
= SN | Dei sameinte nasjonane | In Nynorsk
= FN | De forente nasjoner | In Norwegian
= ߡ.ߟ.ߛ | ߡߊ߲߬ߕߏ߲ ߘߍ߬ߣߍ߲ ߛߌ߲߬ߝߏ߲߬ߧߊ߬ߟߌ | NQO
= ONE | Organisatioun des Natiouns Eunies | In Norman
= ИНО | Иугонд Нациты Организаци | In Ossetian
= HA | Huñusqa Aylluskakuna | In Quechuan languages
= ONU | Organisassion dle Nassion Unìe | In Piedmontese
= ONU | Organisaziun da las Naziuns unidas | In Romansh
= ОЗН | Орґанізація Зъєдиненых Націй | In Rusyn
= ХНТ | Холбоһуктаах Нациялар Тэрилтэлэрэ | In Yakut
= UNO | Unitit Naitions Organisation | In Scots
= UN | Unitit Naitions | In Scots
= ON | Ovttastuvvan Našuvnnat | In Northern Sami
= MNP | Mubatanidzwa weNyika Pasirose | In Shona
= QM | Qaramada Midoobay | In Somali
= OKB | Organizata e Kombeve të Bashkuara | In Albanian
= PBB | Perserikatan Bangsa-Bangsa | In Sundanese
= СММ | Созмони Милали Муттаҳид | In Tajik
= BMG | Birleşen Milletler Guramasy | In Turkmen
= БМО | Берләшкән Милләтләр Оешмасы | In Tatar
= ОНО | Огазеяськем Нациослэн Организацизы | In Udmurt
= ONU | Organixasion dełe Nasion Unìe | In Venetian
= ÜRO | Ühtenzoittud Rahvahiden Organizacii | In Veps
= ÜRK | Ühthižrahvazkundad | In Veps
= ÜN | Ühtištetad Nacijad | In Veps
= NNP | Nogan Netas Pebalöl | In Volapük
= ONU | Organizåcion des Nåcions Uneyes | In Walloon
= KMX | Kureelu Mbootayu Xeet yi | In Wolof
= AOA | Àgbájọ àwọn Orílẹ̀-èdè Aṣòkan | In Yoruba - OUNID
-
Organizo de la Unuiĝintaj Nacioj por Industria Disvolvado (https://www.unido.org/)
= UNIDO | United Nations Industrial Development Organization | In English
- OUP
-
Oxford University Press (https://global.oup.com/)
- OUPP
-
Office for University Preparatory Programs
- OUT
-
Orbiter Utility Tray
- OV
-
Order Voucher
- OV
-
Orbital Vehicle
- OV
-
Orbiter Vehicle
- OV
-
Oxygen Vent
- OV
-
Openbaar Vervoer
- OVA
-
Organisme Vérificateur Agréé
- OVA
-
Open Virtualization Alliance
- OVAL
-
Open Vulnerability and Assessment Language
- OVB
-
Organisatie ter Verbetering van de Binnenvisserij
- OVC
-
Ommense Voetbal Club
The abbreviation OVC (Ommense Voetbal Club) includes the abbreviation VC (Voetbal Club).
- OVC
-
Oijense Voetbal Club
The abbreviation OVC (Oijense Voetbal Club) includes the abbreviation VC (Voetbal Club).
- OVC
-
Oosterbeekse Voetbal Club
The abbreviation OVC (Oosterbeekse Voetbal Club) includes the abbreviation VC (Voetbal Club).
- OVCAD
-
OVarian CAncer Diagnosis
- OVCO
-
Operational Voice Communication Office
- OVCS
-
Ophovense Voetbal Club Sittard
The abbreviation OVCS (Ophovense Voetbal Club Sittard) includes the abbreviation VC (Voetbal Club).
- OVDS
-
Oxidizer Vent Drain System
- OVEI
-
Orbiter Vehicle End Item
The abbreviation OVEI (Orbiter Vehicle End Item) includes the abbreviation EI (End Item).
- OVH
-
Ontspannings Vereniging Hercules
- OVH
-
Oles Van Herman
- OVH
-
On Vous Héberge ?
- OVI
-
Optical Variable Ink
- OVI
-
Operational Validation Inspection
- OVL
-
ONGC (Oil and Natural Gas Corporation) Videsh Limited (www.ongcvidesh.com)
- OVM
-
Oudervereniging voor de Moraal
- OVNI
-
Objectes Voladors No Identificats
- OVNI
-
Objet Volant Non Identifié
= OVNI | Objecte Volador No Identificat | In Catalan
= НЛО | Неидентифициран летящ обект | In Bulgarian
= OVNI | Objeto Volador No Identificado | In Spanish
= UFO | Unidentifiziertes Flugobjekt | In German
= UFO | Unidentified Flying Object | In English
= UFO | Unknown Flying Object | In English
= UFO | Uidentificeret flyvende objekt | In Danish
= NIFO | Neidentigita Fluganta Objekto | In Esperanto
= UFO | Unbekend fleanend objekt | In Frisian
= עב"מ | עצם בלתי מזוהה | In Hebrew
= OVNI | Oggetto Volante Non Identificato | In Italian
= NLO | Neidentificēts lidojošs objekts | In Latvian
= UFO | Uidentifisert flygende objekt | In Norwegian
= UFO | Uidentifisert flygande objekt | In Nynorsk
= NOL | Niezidentyfikowany Obiekt Latający | In Polish
= OVNI | Objeto Voador Não Identificado | In Portuguese
= OZN | Obiect Zburător Neidentificat | In Romanian
= НЛО | Неопознанный летающий объект | In Russian
= NLO | Neidentifikovani leteći objekat | In Serbo-Croatian - OVNI
-
Objecte Volador No Identificat
= НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (see above)
- OVNI
-
Objeto Volador No Identificado
= НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (see above)
- OVNI
-
Oggetto Volante Non Identificato
= НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (see above)
- OVNI
-
Objeto Voador Não Identificado
= НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (see above)
- OVPR
-
Office of the Vice President for Research
- OVR
-
Opération Villages Roumains
- OVS
-
Observation of Variable Stars
- OVT
-
Onvoltooid Verleden Tijd
- OVV
-
Oostvoornse Voetbal Vereniging
- OVV
-
Oosteinder Voetbal Vereniging
- OVV
-
Onder Vermelding Van
- OVV
-
Overlegcentrum van Vlaamse Verenigingen
- OVVO
-
Op Volharding Volgt Overwinning
- OW
-
Optical Window
- OWASP
-
Open Web Application Security Project (www.owasp.org)
- OWD
-
One-Way Doppler
- OWDE
-
One-Way Doppler Extraction
- OWF
-
Optimum Working Frequency
- OWIOS
-
Over Winnen Is Ons Streven
- OWL
-
Web Ontology Language
- OWL
-
Ostwestfalen-Darts-Liga
- OWL
-
Object Windows Library
- OWL-D
-
Ontology Web Language Description Logics
- OWL-S
-
Web Ontology Language for Web Services
- OWP
-
Organizacja Wyzwolenia Palestyny
= PLO | Palestine Liberation Organization | In English
= FAT | Fələstin Azadlıq Təşkilatı | In Azerbaijani
= ООП | Организация за освобождение на Палестина | In Bulgarian
= OAP | Organització per a l'Alliberament de Palestina | In Catalan
= OOP | Organizace pro osvobození Palestiny | In Czech
= OLP | Organización para la Liberación de Palestina | In Spanish
= OLP | Organisation de Libération de la Palestine | In French
= PAE | Palestinaren Askapenerako Erakundea | In Basque
= OLP | Organizaĵo por Liberigo de Palestino | In Esperanto
= OLP | Organización para a Liberación da Palestina | In Galician
= PLO | 팔레스타인 해방기구 | In Korean
= OLP | Organização para a Libertação da Palestina | In Portuguese
= PLO | パレスチナ解放機構 | In Japanese
= ПЛО | Палестинската ослободителна организација | In Macedonian
= PIO | Palestinos išsivadavimo organizacija | In Lithuanian
= პგო | პალესტინის განთავისუფლების ორგანიზაცია | In Georgian
= OLP | Organizzazione per la Liberazione della Palestina | In Italian
= ООП | Организация освобождения Палестины | In Russian
= ПЛО | Палестинска ослободилачка организација | In Serbian
= PLO | 巴勒斯坦解放組織 | In Chinese languages
= OВП | Організація визволення Палестини | In Ukrainian
= FKÖ | Filistin Kurtuluş Örgütü | In Turkish - OWSE
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OSSTMM Wireless Security Expert
- OWTRAD
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Old World Traditional Trade Routes (Project)
- OXCs
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Optical cross connects
- OYCF
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Overseas Young Chinese Forum
- OZC
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ODIS Zorgvlied Combinatie
- OZC
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Ommer Zaterdag Club
- OZK
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Oranje Zwart Kromhout
- OZN
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Obiect Zburător Neidentificat
= OVNI, НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (see above)
- OZN
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Organizacija Združenih Narodov (https://www.un.org/)
= OUN, ONU, ААН, VN, OOH, ABU, OSN, ПНО, ՄԱԿ, FN, NBE, CN, KU, ΟΗΕ, ООН, ONZ, BMT, LHiQ, OKB, УН, UM, ST, HN, PBB, NA, NY, ÜRO, SÞ, ЕМрО, ДЛО, የተ.መ.ድ., ЦМГІ, JTO, БМО, НҮБ, CU, އ.ދ, YK, ONI, AU, ENSZ, BMSh, გაერო, ЛъЗ, ӦВК, БУУ, СМТ, ÜNU, LIBIMO, LBM, ANO, FM, ИНО, संरा, ߡ.ߟ.ߛ, ONE, HA, ОЗН, ХНТ, UNO, MNP, QM, СММ, BMG, ОНО, ÜRK, NNP, KMX, AOA (see above)
- OZO
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Oranje Zal Overwinnen
- OZOD
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Overwinnen Zij Ons Doel
- OZW
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Oud Zwart Wit
- OcDyn
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Ocean Dynamics
- OcEng
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Ocean Engineering
- OcMod
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Ocean Modelling
- OcPhE
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Ocean Physics and Engineering
- OcSci
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Ocean Science
- OeAV
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Österreichischer Alpenverein (www.alpenverein.at)
- OeGHO
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Österreichische Gesellschaft für Hämatologie und medizinische Onkologie (https://www.oegho.at/)
- OeM
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Österreichische Mediathek (www.mediathek.ac.at)
- Ofta
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Observatoire Français des Techniques Avancées
- OkSEJT
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Okcidenta Somera Junulara Tendaro
- OklRe
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University of Oklahoma Observatory Reprints
- OntoUCP
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Ontology based Unified Communication Protocol
- OntoUCP
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Ontology-based Unified Communication Protocol
- OpSCN
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Optical Sciences Center Newsletter
- OptCo
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Optics Communications
- OptEn
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Optical Engineering
- OptFT
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Optical Fiber Technology
- OptL
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Optics Letters
- OptLE
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Optics and Lasers in Engineering
- OptLT
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Optics Laser Technology
- OptMa
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Optical Materials
- OptN
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Optics News
- OptPE
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Optical Physics and Engineering
- OptPN
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Optics & Photonics News
- OptQE
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Optical Quantum Electronics
- OptRv
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Optical Review
- OptSp
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Optics and Spectroscopy
- OrBAC
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Organisation-Based Access Control
- OrGeo
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Organic Geochemistry
- OrLi
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Origins of Life
- OrNav
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Ortung und Navigation
- OsCar
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Osteoarthritis and Cartilage
- OxM
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Oxidation of Metals
- OxfOO
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Oxford University Observatory Observations
- OzSE
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Ozone: Science and Engineering
- OÖ
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Oberösterreich
- OÖGKK
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Oberösterreichische Gebietskrankenkassa (www.ooegkk.at)
- OВП
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Організація визволення Палестини
= OWP, PLO, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, FKÖ (see above)