TermCymru

Results are displayed in alphabetical order.
Welsh: Seilwaith a meithrin gallu
English: Infrastructure and capacity building
Status C
Subject: Economic development
Last updated: 7 January 2008
Welsh: seilwaith beicio
English: cycling infrastructure
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 5 March 2009
Welsh: seilwaith cyfathrebu digidol
English: digital communications infrastructure
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 13 August 2020
Welsh: seilwaith cynhyrchu ynni mewn perchnogaeth leol
English: locally owned energy generation
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 7 October 2021
Welsh: seilwaith cynhyrchu ynni ym mherchnogaeth y cyhoedd
English: publicly owned energy generation
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 7 October 2021
Welsh: seilwaith digidol
English: digital infrastructure
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 13 August 2020
Welsh: seilwaith draenio
English: drainage infrastructure
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 19 May 2022
Welsh: Seilwaith fel Gwasanaeth
English: Infrastructure as a Service
Status A
Subject: ICT
Part of speech: Noun, Masculine, Singular
Context: IaaS
Last updated: 23 June 2014
Welsh: Seilwaith fel Gwasanaeth
English: IaaS
Status A
Subject: ICT
Part of speech: Noun, Masculine, Singular
Definition: Infrastructure as a Service
Last updated: 23 June 2014
Welsh: seilwaith ffiniau
English: border infrastructure
Status B
Subject: Politics
Part of speech: Noun, Masculine, Singular
Last updated: 23 December 2020
Welsh: seilwaith ffisegol
English: physical infrastructure
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Context: Seilwaith ffisegol - lle bo modd o gyllid refeniw, yn enwedig cymhwyso TGCh.
Notes: Pennawd mewn cyfrifon ariannol
Last updated: 13 September 2018
Welsh: seilwaith gwefru cerbydau trydan
English: electric vehicle charging infrastructure
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 10 February 2022
Welsh: seilwaith gwefru chwim ar gyfer cerbydau trydan
English: EV rapid charging infrastructure
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 22 December 2022
Welsh: seilwaith gwyrdd
English: green infrastructure
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: The European Commission defines green infrastructure as: “the use of ecosystems, green spaces and water in strategic land use planning to deliver environmental and quality of life benefits. It includes parks, open spaces, playing fields, woodlands, wetlands, road verges, allotments and private gardens. Green infrastructure can contribute to climate change mitigation and adaptation, natural disaster risk mitigation, protection against flooding and erosion as well as biodiversity conservation” (The Scottish Government, Green Infrastructure: Design and Placemaking).
Last updated: 31 July 2018
Welsh: seilwaith gwyrdd
English: green infrastructure
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: The use of ecosystems, green spaces and water in strategic land use planning to deliver environmental and quality of life benefits.
Last updated: 1 August 2018
Welsh: seilwaith gyhoeddus
English: public infrastructure
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 7 October 2021
Welsh: seilwaith rheilffyrdd
English: rail infrastructure
Status A
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 27 October 2020
Welsh: Seilwaith Rheilffyrdd a Gwell Gwasanaethau i Deithwyr
English: Rail Infrastructure and Improved Passenger Services
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: RIIPS
Last updated: 27 March 2008
Welsh: Seilwaith Rheilffyrdd a Gwell Gwasanaethau i Deithwyr
English: RIIPS
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: Rail Infrastructure and Improved Passenger Services
Last updated: 27 March 2008
Welsh: seilwaith strategol
English: strategic infrastructure
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last updated: 29 March 2007
Welsh: Seilwaith sy'n Gysylltiedig â Thwristiaeth
English: Tourism Related Infrastructure
Status C
Subject: Finance and statistics
Part of speech: Proper noun
Context: Maes yn y gyllideb.
Last updated: 5 March 2015
Welsh: seilwaith telathrebu
English: telecommunications infrastructure
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 3 October 2005
Welsh: seilwaith telathrebu symudol
English: mobile infrastructure
Status A
Subject: ICT
Part of speech: Noun, Masculine, Singular
Context: For telecommunications.
Last updated: 10 October 2013
Welsh: seilwaith trafnidiaeth
English: transport infrastructure
Status A
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 27 October 2020
Welsh: seilwaith y grid trydan
English: electricity grid infrastructure
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 13 August 2020
Welsh: Seilwaith Ymchwil Glinigol
English: Clinical Research Infrastructure
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 10 November 2010
Welsh: seilwaith ynni'r môr
English: marine energy infrastructure
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Context: Cwblhau ein prosiect seilwaith ynni’r môr er mwyn nodi safleoedd strategol ar gyfer datblygiadau tonnau a ffrwd llanw a’r camau ehangach y bydd angen eu cymryd i’w cefnogi.
Last updated: 5 September 2019
Welsh: seilwaith y prif rwydwaith
English: key network infrastructure
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Context: Heolydd.
Last updated: 12 December 2011
Welsh: seilwaith y safle
English: site architecture
Status C
Subject: Estates and Cadw
Part of speech: Noun, Masculine, Singular
Last updated: 21 July 2011
Welsh: seilwaith ysgolion
English: school infrastructure
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last updated: 3 October 2005
Welsh: Seilwaith Ysgolion
English: Schools Infrastructure
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: Teitl cyllideb
Last updated: 7 January 2008
Welsh: seinchwyddwr
English: amplifier
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 25 July 2005
Welsh: seinegol
English: phonetic
Status B
Subject: Culture and the arts
Part of speech: Adjective
Definition: Yn disgrifio sut mae seiniau yn cael eu cynhyrchu.
Notes: Term o faes ieithyddiaeth a ddefnyddir mewn deunyddiau sy’n gysylltiedig â CEFR, y Fframwaith Cyfeirio Cyffredin Ewropeaidd ar gyfer Ieithoedd.
Last updated: 2 October 2025
Welsh: seinfwrdd
English: sounding board
Status B
Subject: Estates and Cadw
Part of speech: Noun, Masculine, Singular
Plural: byrddau seinio
Definition: Sgrin y tu ôl i bulpud neu lwyfan i daflu llais siaradwr at y gynulleidfa.
Notes: Mae’n annhebyg y bydd y ffurf Gymraeg ar y term technegol hwn yn addas ar gyfer trosi ‘sounding board’ mewn ystyron ffigurol.
Last updated: 19 December 2022
Welsh: seinfwrdd
English: soundboard
Status B
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Plural: seinfyrddau
Definition: Yng nghyd-destun offerynnau cerdd llinynnol, arwyneb y mae’r llinynnau yn dirgrynu yn ei erbyn er mwyn chwyddo’r sain.
Last updated: 22 December 2022
Welsh: Seinio'n Iach: cerddoriaeth ar gyfer ysbytai gan gerddorion gwirfoddol lleol
English: Healthy Sounds: music for hospitals provided by local voluntary musicians
Status C
Subject: Tourism and leisure
Part of speech: Neutral
Last updated: 10 July 2008
Welsh: seinod
English: soundmark
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Plural: seinodau
Definition: Sŵn amlwg a neilltuol y mae pobl yn ei gysylltu â lleoliad neu ardal benodol, er enghraifft tonnau'r môr, synau amaethyddol a gwynt, yn ogystal â synau sy'n gysylltiedig â diwylliant megis cerddoriaeth, clychau, clociau ac ati.
Notes: Yng nghyd-destun sŵn amgylcheddol. Mae'r term hwn, yn Gymraeg a Saesneg, yn adeiladu ar dermau tebyg fel landmark/tirnod.
Last updated: 3 February 2022
Welsh: seinwedd
English: soundscape
Status A
Subject: Planning
Part of speech: Noun, Feminine, Singular
Plural: seinweddau
Definition: Yr amgylchedd acwstig fel y'i canfyddir neu y'i profir a/neu y'i deellir gan berson neu bobl, mewn cyd-destun penodol.
Notes: Yng nghyd-destun sŵn amgylcheddol.
Last updated: 26 January 2023
Welsh: seinwedd briodol
English: appropriate soundscape
Status B
Subject: Planning
Part of speech: Noun, Feminine, Singular
Plural: seinweddau priodol
Definition: Yr amgylchedd acwstig iawn ar yr adeg iawn ac yn y lle iawn (o safbwynt y defnyddiwr), y gellir ei greu drwy ddylunio acwstig da, dylunio seinwedd da neu gyfuniad o'r ddau.
Notes: Yng nghyd-destun sŵn amgylcheddol.
Last updated: 3 February 2022
Welsh: seinydd
English: loudspeaker
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 19 July 2005
Welsh: seinydd
English: speaker
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Definition: sain
Last updated: 24 February 2006
Welsh: seinydd larwm tân
English: fire alarm sounder
Status C
Subject: Fire and rescue
Part of speech: Noun, Masculine, Singular
Last updated: 9 February 2009
Welsh: seiri maen
English: masons
Status C
Subject: Estates and Cadw
Part of speech: Noun, Plural
Last updated: 22 May 2006
Welsh: Seiriol
English: Seiriol
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Sir Ynys Môn. Dyma'r enwau Cymraeg a Saesneg a ragnodwyd ar gyfer y ward yng Ngorchymyn Sir Ynys Môn (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: Seisnig
English: English
Status C
Subject: Personnel
Part of speech: Adjective
Definition: Gwefan ORMS.
Last updated: 9 October 2006
Welsh: seisnigeiddio
English: anglicise
Status C
Subject: Education
Part of speech: Verb
Last updated: 28 June 2006
Welsh: SEJWG
English: SEJWG
Status C
Subject: Economic development
Definition: Social Enterprise Joint Working Group
Last updated: 24 May 2005
Welsh: Seland Newydd
English: New Zealand
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: Selattyn
English: Selattyn
Status A
Subject: Place-names
Part of speech: Proper noun
Definition: Lle yn Lloegr.
Last updated: 2 May 2013
Welsh: seleniwm
English: selenium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Se
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025