TermCymru

Results are displayed in English alphabetical order A-Z
English: occupy
Welsh: meddiannu
Status C
Subject: Housing
Part of speech: Verb
Last Updated: 13 February 2003
English: occupy
Welsh: meddiannu
Status A
Subject: Housing
Part of speech: Verb
Notes: Gweler y cofnod am occupation / meddiannaeth. Mae gwahaniaeth cyfreithiol pwysig rhwng 'occupy' ('meddiannu') a 'possess' ('meddu').
Last Updated: 26 November 2019
English: occurrence recording system
Welsh: system cofnodi achlysuron
Status B
Subject: Planning
Part of speech: Noun, Feminine, Singular
Definition: System ar gyfer derbyn a chofnodi gwybodaeth am ddigwyddiadau a sefyllfaoedd sy'n deillio o risgiau diogelwch sy'n ymwneud â'r adeilad, ac ar gyfer cyfleu'r wybodaeth honno i'r person sy'n gyfrifol am yr adeilad.
Notes: Yng nghyd-destun y ddeddfwriaeth ar ddiogelwch adeiladau. Sylwer bod angen gwahaniaethu rhwng y term incident / digwyddiad ac occurrence / achlysur yn y cyd-destun penodol hwnnw.
Last Updated: 8 May 2025
English: OCD
Welsh: anhwylder obsesiynol-gorfodaethol
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am obsessive-compulsive disorder.
Last Updated: 10 October 2024
English: Oceania
Welsh: Oceania
Status B
Subject: Place-names
Part of speech: Noun, Masculine, Singular
Last Updated: 21 July 2022
English: OCJR
Welsh: Swyddfa Diwygio Cyfiawnder Troseddol
Status C
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Definition: Office for Criminal Justice Reform
Last Updated: 19 December 2006
English: OCMO
Welsh: Swyddfa'r Prif Swyddog Meddygol
Status A
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Medical Officer
Last Updated: 15 May 2006
English: OCN
Welsh: Rhwydwaith y Coleg Agored
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Open College Network
Last Updated: 17 March 2004
English: OCNO
Welsh: Swyddfa'r Prif Swyddog Nyrsio
Status A
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Nursing Officer
Last Updated: 22 January 2007
English: OCN Wales
Welsh: Rhwydwaith Coleg Agored Cymru
Status A
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Open College Network Wales
Last Updated: 7 April 2009
English: OCPA
Welsh: OCPA
Status A
Subject: Politics
Part of speech: Proper noun, Feminine, Singular
Definition: Office of the Commissioner for Public Appointments
Last Updated: 7 October 2002
English: OCR
Welsh: Y Rheoliadau Rheolaethau Swyddogol
Status A
Subject: Law
Part of speech: Noun, Plural
Notes: Dyma'r acronym Saesneg a ddefnyddir am Official Control Regulations
Last Updated: 4 July 2023
English: OCRSO
Welsh: Swyddfa'r Prif Swyddog Ymchwil Gymdeithasol
Status C
Subject: Social services
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Social Research Officer
Last Updated: 21 July 2005
English: OCSRO
Welsh: Swyddfa'r Prif Swyddog Ymchwil Gymdeithasol
Status C
Subject: Social services
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Social Research Officer
Last Updated: 22 January 2008
English: OCT
Welsh: OCT
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Prawf diagnostig ym maes optometreg.
Last Updated: 4 June 2020
English: OCT
Welsh: Tomograffeg Cydlyniant Optegol
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yng nghyd-destun optometreg. Dyma'r acronym Saesneg a ddefnyddir am Optical Coherence Tomography.
Last Updated: 25 February 2021
English: OCTO
Welsh: Swyddfa'r Prif Swyddog Technoleg
Status A
Subject: Welsh Government posts and departments
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Technology Officer
Last Updated: 2 December 2005
English: octopus
Welsh: octopws
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Teulu’r Octopodidae
Last Updated: 19 March 2012
English: octylphenol
Welsh: octylffenol
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last Updated: 1 November 2010
English: ocular
Welsh: ociwlar
Status A
Subject: Health
Part of speech: Adjective
Notes: Yng nghyd-destun gwasanaethau gofal llygaid.
Last Updated: 25 November 2022
English: ocular care
Welsh: gofal ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yn gyffredinol mae'r term hwn yn gyfystyr ag 'eye care' ac fe'i defnyddir mewn cyd-destunau clinigol a thechnegol.
Last Updated: 25 November 2022
English: ocular condition
Welsh: cyflwr ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: cyflyrau ociwlar
Notes: Yn gyffredinol mae'r term hwn yn gyfystyr ag 'eye condition' ac fe'i defnyddir mewn cyd-destunau clinigol a thechnegol.
Last Updated: 25 November 2022
English: ocular disease
Welsh: clefyd ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: clefydau ociwlar
Notes: Yn gyffredinol mae'r term hwn yn gyfystyr ag 'eye disease' ac fe'i defnyddir mewn cyd-destunau clinigol a thechnegol.
Last Updated: 25 November 2022
English: ocular examination
Welsh: archwiliad ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: archwiliadau ociwlar
Notes: Yn gyffredinol mae'r term hwn yn gyfystyr ag 'ocular disease' ac fe'i defnyddir mewn cyd-destunau clinigol a thechnegol.
Last Updated: 25 November 2022
English: ocular health
Welsh: iechyd ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yn gyffredinol mae'r term hwn yn gyfystyr ag 'ocular health' ac fe'i defnyddir mewn cyd-destunau clinigol a thechnegol.
Last Updated: 25 November 2022
English: ocular hypertension
Welsh: gorbwysedd ocwlar
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 10 October 2016
English: ocular media
Welsh: cyfryngau ociwlar
Status B
Subject: Health
Part of speech: Noun, Plural
Definition: Y strwythurau sydd fel arfer yn dryloyw yn y llygad, gan gynnwys y gornbilen, y lens, yr hylif gwydrog a'r hylif dyfrllyd.
Last Updated: 25 March 2024
English: ocular pathology
Welsh: patholeg ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Yr astudiaeth o afiechydon y llygad a chrau'r llygad.
Last Updated: 25 November 2022
English: ocular therapeutics
Welsh: therapiwteg ociwlar
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Yr astudiaeth o driniaethau ar gyfer anhwylderau'r llygaid a chrau'r llygad.
Last Updated: 25 November 2022
English: oculoplastic condition
Welsh: cyflwr ocwloblastig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yng nghyd-destun optometreg.
Last Updated: 25 February 2021
English: oculoplastics
Welsh: ocwloblasteg
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Notes: Yng nghyd-destun optometreg.
Last Updated: 25 February 2021
English: OCVO
Welsh: OCVO
Status A
Subject: Welsh Government posts and departments
Part of speech: Noun, Feminine, Singular
Definition: Office of the Chief Veterinary Officer
Notes: Enw llawn: Swyddfa'r Prif Filfeddyg. Rhan o Grŵp yr Economi, Sgiliau a Chyfoeth Naturiol yn Llywodraeth Cymru. Ychwanegwyd y cofnod hwn Ionawr 2016.
Last Updated: 7 January 2016
English: OCW
Welsh: Canolfan Organig Cymru
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Organic Centre Wales
Last Updated: 30 January 2004
English: ODI
Welsh: Swyddfa Materion Anabledd
Status C
Subject: Social services
Part of speech: Noun, Feminine, Singular
Definition: Office for Disability Issues
Notes: Gweler yr erthygl ar y Model Cymdeithasol o Anabledd yn yr Arddulliadur. Yn unol â'r Model, mae amhariad ("impairment", a elwid yn "nam" o'r blaen) yn nodwedd ar berson, a all effeithio ar ei ymddangosiad neu ar sut y mae ei gorff neu ei feddwl yn gweithio; caiff pobl anabl (y gellir hefyd cyfeirio atynt fel "pobl anabledig" neu "bobl sy'n cael eu hanablu") eu hanablu gan ffactorau allanol fel yr amgylchedd, polisi neu arferion, neu yn sgil methiant i ddarparu addasiadau ar eu cyfer; ac anabledd yw canlyniad anablu pobl sydd ag amhariadau. 
Last Updated: 14 November 2023
English: odorising
Welsh: arogleiddio
Status C
Subject: Law
Part of speech: Verb
Last Updated: 30 April 2008
English: ODP
Welsh: ODP
Status C
Subject: Health
Part of speech: Neutral
Definition: operating department practitioner
Last Updated: 23 September 2004
English: ODPF
Welsh: Fforwm Partneriaeth Cyflawni Gweithredol
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Operational Delivery Partners Forum
Last Updated: 2 August 2012
English: ODPM
Welsh: ODPM
Status A
Subject: Politics
Part of speech: Noun, Feminine, Singular
Definition: Office of the Deputy Prime Minister
Context: Former UK Cabinet post.
Last Updated: 21 July 2005
English: ODTC
Welsh: Canolfan Diagnosteg a Thriniaeth Offthalmig
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Ophthalmic Diagnostic and Treatment Centre
Last Updated: 11 January 2013
English: OECD
Welsh: Y Sefydliad ar gyfer Cydweithrediad a Datblygiad Economaidd
Status A
Subject: Economic development
Part of speech: Proper noun, Masculine, Singular
Definition: Organisation for Economic Co-operation and Development
Last Updated: 23 December 2005
English: OECD Multi-level Governance Review: The Future of Regional Development and Investment in Wales
Welsh: Adolygiad yr OECD o Wahanol Haenau Llywodraethu: Dyfodol Datblygiad a Buddsoddiad Rhanbarthol yng Nghymru
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 8 May 2025
English: oedema
Welsh: oedema
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Cyflwr lle bydd hylif dyfrllyd yn casglu yng nghelloedd a cheudodau'r corff.
Last Updated: 25 June 2020
English: OEGW
Welsh: SLlAC
Status A
Subject: Environment
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronymau Cymraeg a Saesneg a ddefnyddir am Office of Environmental Governance Wales / Swyddfa Llywodraethiant Amgylcheddol Cymru.
Last Updated: 22 April 2025
English: OEM
Welsh: Gweithgynhyrchu Cyfarpar Gwreiddiol
Status C
Subject: Economic development
Part of speech: Verb
Definition: Original Equipment Manufacture
Last Updated: 2 February 2006
English: oenological practices
Welsh: arferion gwinyddol
Status A
Subject: Food
Part of speech: Noun, Plural
Definition: Y prosesau, triniaethau, technegau neu ddeunyddiau a ddefnyddir i gynhyrchu gwin.
Last Updated: 21 July 2022
English: OEP
Welsh: Swyddfa Diogelu'r Amgylchedd
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am Office of Environmental Protection.
Last Updated: 23 March 2021
English: oesophageal pH monitoring
Welsh: monitro pH oesoffagaidd
Status C
Subject: Health
Part of speech: Verb
Last Updated: 13 June 2011
English: oesophagus
Welsh: oesoffagws
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 3 March 2006
English: oestradiol preparation
Welsh: paratoad oestriadol
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: paratoadau oestriadol
Definition: Meddyginiaeth a roddir fel rhan o driniaeth ar gyfer dysfforia rhywedd, ymysg cyflyrau eraill.
Last Updated: 17 April 2024
English: oestrogens
Welsh: oestrogenau
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Last Updated: 16 October 2009