TermCymru

Results are displayed in alphabetical order.
Welsh: Y Swyddfa Reoleiddio Niwclear
English: ONR
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am Office for Nuclear Regulation.
Last updated: 23 March 2021
Welsh: Y Swyddfa Rheilffyrdd a Ffyrdd
English: Office of Rail and Road
Status A
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last updated: 3 December 2025
Welsh: Y Swyddfa Rheilffyrdd a Ffyrdd
English: ORR
Status A
Subject: Transport
Part of speech: Noun, Feminine, Singular
Notes: Dyma’r acronym Saesneg a ddefnyddir am Office of Rail and Road.
Last updated: 3 December 2025
Welsh: Y Swyddfa Rheolaeth Gyhoeddus
English: Office for Public Management
Status A
Subject: Politics
Part of speech: Proper noun, Feminine, Singular
Definition: OPM
Last updated: 12 May 2006
Welsh: Y Swyddfa Rheolaeth Gyhoeddus
English: OPM
Status A
Subject: Politics
Part of speech: Proper noun, Feminine, Singular
Definition: Office for Public Management
Last updated: 12 May 2006
Welsh: Y Swyddfa Rheoleiddio Ystadegau
English: Office for Statistics Regulation
Status B
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Last updated: 24 November 2025
Welsh: Y Swyddfa Rheoleiddio Ystadegau
English: OSR
Status B
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am Office for Statistics Regulation.
Last updated: 24 November 2025
Welsh: Y Swyddfa Rheoliadau Telathrebu
English: Office of Telecommunications
Status A
Subject: ICT
Part of speech: Noun, Feminine, Singular
Definition: Oftel
Last updated: 2 September 2004
Welsh: Y Swyddfa Safonau mewn Addysg, Gwasanaethau Plant a Sgiliau
English: Office for Standards in Education, Children’s Services and Skills
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r teitl llawn ar Ofsted, un o asiantaethau Llywodraeth y DU.
Last updated: 23 October 2025
Welsh: Y Swyddfa Ymchwiliadau Ymddygiad Barnwrol
English: Judicial Conduct Investigations Office
Status B
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Last updated: 2 May 2024
Welsh: Y Swyddfa Ystadegau Gwladol
English: Office for National Statistics
Status A
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Definition: ONS
Last updated: 1 June 2005
Welsh: Y Swyddog Cyswllt a fydd yn Awdurdodi'r Prosiect
English: Authorising Contact
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: Yng nghyd-destun WEFO Ar-lein a chofrestru busnesau (Business Party Registration) etc er mwyn iddynt ddefnyddio'r system.
Last updated: 10 July 2008
Welsh: y synnwyr festibwlar
English: vestibular sense
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Un o'r synhwyrau, sef y synnwyr o gydbwysedd, cyflymder a chyfeiriad.
Last updated: 9 January 2020
Welsh: Y System Ddata Amlasiantaeth Genedlaethol ar gyfer Rheoli Troseddwyr
English: National Offender Management Multi Agency Data System
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 25 March 2021
Welsh: Y System Ddata Amlasiantaeth Genedlaethol ar gyfer Rheoli Troseddwyr
English: NOMADS
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am y National Offender Management Multi Agency Data System
Last updated: 25 March 2021
Welsh: Y System Ddiogel
English: Safe System
Status B
Subject: Transport
Part of speech: Noun, Feminine, Singular
Definition: Ymagwedd at reoli diogelwch ar y ffyrdd, sydd wedi ei seilio ar yr egwyddor na ddylid cyfaddawdu ar fywyd ac iechyd yn sgil yr angen i deithio.
Last updated: 8 December 2022
Welsh: Y System Ewropeaidd ar gyfer Gwybodaeth am Deithio ac Awdurdodi Teithio
English: European Travel Information and Authorisation System
Status A
Subject: Europe
Part of speech: Noun, Feminine, Singular
Definition: System electronig ar gyfer caniatáu ac olrhain ymwelwyr o wledydd nad oes angen fisa arnynt i fynd i mewn i'r Ardal Schengen.
Last updated: 10 June 2021
Welsh: Y System Ewropeaidd ar gyfer Gwybodaeth am Deithio ac Awdurdodi Teithio
English: ETIAS
Status A
Subject: Europe
Part of speech: Noun, Feminine, Singular
Definition: System electronig ar gyfer caniatáu ac olrhain ymwelwyr o wledydd nad oes angen fisa arnynt i fynd i mewn i'r Ardal Schengen.
Notes: Dyma'r acronym Saesneg a ddefnyddir am European Travel Information and Authorisation System.
Last updated: 10 June 2021
Welsh: y system genhedlol-wrinol
English: genito-urinary system
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Last updated: 3 March 2006
Welsh: Y System Grantiau Electronig
English: Electronic Grants System
Status C
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Last updated: 31 May 2006
Welsh: Y System Gwybodaeth Amgylcheddol
English: Environmental Information System
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: EnvIS
Last updated: 2 January 2013
Welsh: Y System Gwybodaeth Amgylcheddol
English: EnvIS
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: Environmental Information System
Last updated: 2 January 2013
Welsh: y System Llysoedd a Chyfiawnder
English: Courts and Justice System
Status C
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Context: Awgrymodd yr Arglwydd Brif Ustus y dylai fod gan Gymru ei hawdurdodaeth ei hun heb unrhyw gostau ychwanegol i Lywodraeth Cymru gan na fyddai angen gwahanu’r system Llysoedd a Chyfiawnder o Gymru.
Last updated: 21 April 2016
Welsh: Y System Mesur Iechyd a Diogelwch ar gyfer Tai
English: Housing Health and Safety Rating System
Status B
Subject: Housing
Part of speech: Noun, Feminine, Singular
Last updated: 13 February 2025
Welsh: Y System Mesur Iechyd a Diogelwch ar gyfer Tai
English: HHSRS
Status B
Subject: Housing
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am Housing Health and Safety Rating System.
Last updated: 13 February 2025
Welsh: Y System Mewnforio Cynhyrchion, Anifeiliaid, Bwyd a Bwyd Anifeiliaid
English: Import of Products, Animals, Food and Feed System
Status A
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Notes: Yng nghyd-destun trefniadau mewnforio ac allforio.
Last updated: 4 July 2023
Welsh: Y System Mewnforio Cynhyrchion, Anifeiliaid, Bwyd a Bwyd Anifeiliaid
English: IPAFFS
Status A
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am Import of Products, Animals, Food and Feed System.
Last updated: 4 July 2023
Welsh: Y Tŷ a Fi - Rhwydwaith Cymorth
English: Home Alone - Support Network
Status A
Subject: Personnel
Part of speech: Proper noun
Notes: Un o rwydweithiau cymorth Llywodraeth Cymru
Last updated: 21 October 2021
Welsh: y tafod glas
English: bluetongue
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Clefyd feirysol sy'n effeithio ar anifeiliaid gwyllt ac ar anifeiliaid domestig sy'n cnoi cil, ee defaid, gwartheg a cheirw.
Last updated: 19 June 2025
Welsh: Y Tair Tynged
English: The Three Fates
Status C
Subject: Estates and Cadw
Definition: Yng Nghastell Coch.
Last updated: 13 June 2005
Welsh: Y Taliad Cymorth Organig
English: Organic Support Payment
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: Taliadau Cymorth Organig
Notes: Mae'r Taliad Cymorth Organig yn rhoi cymorth i ffermwyr organig sydd wedi'u hardystio'n llawn yn ystod y cyfnod pontio cyn gweithredu'r Cynllun Ffermio Cynaliadwy.
Last updated: 19 March 2025
Welsh: y Taliad Sengl
English: Single Farm Payment
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: SFP. Common Agricultural Policy payment.
Last updated: 21 April 2004
Welsh: Y Tasglu Anabledd
English: Disability Task Force
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
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
Welsh: Y Tasglu Diogelwch Tomenni Glo
English: Coal Tip Safety Task Force
Status A
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 19 May 2022
Welsh: Y Tasglu Gweinidogol ar gyfer Cymoedd y De
English: Ministerial Taskforce for the South Wales Valleys
Status A
Subject: Community development
Part of speech: Noun, Masculine, Singular
Notes: Tasglu a sefydlwyd yn 2016.
Last updated: 6 April 2017
Welsh: y Tasglu Tryloywder a Marwolaethau
English: Transparency and Mortality Taskforce
Status A
Subject: Health
Part of speech: Proper noun, Masculine, Singular
Definition: The taskforce provides information about mortality statistics.
Last updated: 17 October 2013
Welsh: yterbiwm
English: ytterbium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Yb
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: y terfyn ariannol
English: financial ceiling
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Common Agricultural Policy reform
Last updated: 26 June 2012
Welsh: y terfyn cenedlaethol
English: national ceiling
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Dyma’r arian fydd yn cael ei neilltuo ar gyfer Cynllun y Taliad Uniongyrchol ac a fydd ar gael wedyn i dalu’r Taliad Sylfaenol, y Taliad Gwyrdd ac ati. Term arall yw "financial ceiling."
Last updated: 7 December 2011
Welsh: y terfyn sydd ar yr arwyddion
English: posted limit
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 6 May 2005
Welsh: y Teulu Brenhinol
English: Royalty
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Definition: The royal family.
Last updated: 30 October 2009
Welsh: Y Timau Polisi a Galluogrwydd
English: Policy and Capability Teams
Status C
Subject: Welsh Government posts and departments
Part of speech: Noun, Plural
Last updated: 8 December 2010
Welsh: Y Tiriogaethau Deheuol Ffrengig
English: French Southern Territories
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Safonwyd yr enw hwn gan ddilyn yr egwyddorion a nodir yn yr erthygl 'Dynodi enwau gwladwriaethau, tiriogaethau a chenhedloedd diwladwriaeth' yn yr Arddulliadur.
Last updated: 17 August 2021
Welsh: Y Tirlun Cymreig: Dogfen Bolisi
English: The Welsh Landscape: A Policy Document
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Dogfen Cyngor Cefn Gwlad Cymru 1997
Last updated: 30 November 2004
Welsh: Y Tîm Addysg
English: Education Team
Status A
Subject: Education
Part of speech: Noun, Masculine, Singular
Last updated: 25 March 2002
Welsh: Y Tîm Adolygu Strwythurau a Gwerthuso Swyddi
English: Structural Review and Job Evaluation Team
Status A
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last updated: 15 May 2019
Welsh: Y Tîm Afiechydon Difrifol a Gwasanaethau Cymorth Clinigol
English: Major Health Conditions and Clinical Support Services Team
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 25 February 2005
Welsh: Y Tîm Alinio Cyllid
English: Funding Alignment Team
Status A
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last updated: 25 January 2024
Welsh: Y Tîm Amaethyddiaeth
English: Agriculture Team
Status A
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last updated: 25 March 2002
Welsh: Y Tîm Amaethyddiaeth a Materion Gwledig
English: Agriculture and Rural Affairs Team
Status C
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last updated: 6 December 2005