TermCymru

Results are displayed in alphabetical order.
Welsh: ymosodiad atal gwasanaeth
English: denial of service attack
Status B
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last updated: 14 May 2012
Welsh: ymosodiad Atal Gwasanaeth Gwasgaredig
English: Distributed Denial of Service attack
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau atal gwasanaeth gwasgaredig
Definition: Math o ymosodiad seiber lle caiff gwasanaeth ar-lein ei orlwytho gan nifer fawr o geisiadau ar yr un pryd, gan ei gwneud yn amhosibl i ddefnyddwyr cyfreithlon gael mynediad.
Notes: Mae'r ffurf fer DDoS attack yn gyffredin yn Saesneg.
Last updated: 13 November 2025
Welsh: ymosodiad Atal Gwasanaeth Gwasgaredig
English: DDoS attack
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau atal gwasanaeth gwasgaredig
Definition: Math o ymosodiad seiber lle caiff gwasanaeth ar-lein ei orlwytho gan nifer fawr o geisiadau ar yr un pryd, gan ei gwneud yn amhosibl i ddefnyddwyr cyfreithlon gael mynediad.
Notes: Dyma’r ffurf fer ar y term Saesneg ‘Distributed Denial of Service attack’.
Last updated: 13 November 2025
Welsh: ymosodiadau meddalwedd
English: software attacks
Status C
Subject: ICT
Part of speech: Noun, Plural
Last updated: 1 June 2009
Welsh: ymosodiad cyffredin
English: common assault
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 6 August 2012
Welsh: ymosodiad di-drais
English: passive attack
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 30 August 2012
Welsh: ymosodiad gan derfysgwyr
English: terrorist attack
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last updated: 28 February 2005
Welsh: ymosodiad gan Rwsia
English: Russian invasion
Status B
Subject: Politics
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau gan Rwsia
Context: Mae Llywodraeth Cymru yn cefnogi cyflogi pobl sydd wedi'u dadleoli o Wcráin yn dilyn yr ymosodiad gan Rwsia.
Notes: Yng nghyd-destun yr ymateb i sefyllfa Wcráin.
Last updated: 26 January 2023
Welsh: ymosodiad gwaethygedig ar sail hil neu grefydd
English: racially or religiously aggravated assault
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 1 August 2012
Welsh: ymosodiad person-yn-y-canol
English: man-in-the-middle attack
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau person-yn-y-canol
Definition: Math o ymosodiad seiber lle mae ymosodwr yn ymyrryd â chyfathrebiad rhwng dau barti gan wneud i’r ddau gredu eu bod yn cyfathrebu’n uniongyrchol â’i gilydd, tra bod ymosodwr yn gallu darllen, addasu neu gipio'r negeseuon rhyngddynt.
Notes: Cymharer â'r term interception attack / ymosodiad rhyng-gipio.
Last updated: 13 November 2025
Welsh: ymosodiad rhyng-gipio
English: interception attack
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau rhyng-gipio
Definition: Math o ymosodiad seiber lle mae ymosodwr yn gallu darllen a chipio cyfathrebiadau rhwng dau barti.
Notes: Cymharer â'r term man-in-the-middle attack / ymosodiad person-yn-y-canol.
Last updated: 13 November 2025
Welsh: ymosodiad sbam
English: spam attack
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 31 December 2008
Welsh: ymosodiad seiber
English: cyber attack
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: ymosodiadau seiber
Context: Rydym ar ddeall y ceir tua 60,000 o ymosodiadau seiber bob wythnos yn y DU. Ceir bygythiadau gan seiberdroseddwyr, hacwyr ymgyrchu a hacwyr maleisus dibrofiad, yn ogystal â bygythiadau gan wladwriaethau a bygythiadau a noddir gan wladwriaethau.
Last updated: 11 October 2016
Welsh: ymosodol
English: aggressive
Status B
Subject: Justice and order
Part of speech: Adjective
Context: of behaviour
Last updated: 2 August 2012
Welsh: Ymrannu o Amgylch Medoidau
English: Partitioning around Medoids
Status B
Subject: Finance and statistics
Part of speech: Proper noun
Notes: Angen rhoi'r Saesneg mewn testun italig rhwng cromfachau gan ei fod yn deitl technegol
Last updated: 10 March 2022
Welsh: Y Môr Celtaidd
English: Celtic Sea
Status B
Subject: Place-names
Part of speech: Noun, Masculine, Singular
Definition: Rhan o Gefnfor Iwerydd sydd i'r de o Iwerddon. Mae rhannau o arfordir Sir Benfro, ynghyd â Môr Hafren a rhannau o arfordir de-orllewin Lloegr, yn ffurfio ffin ddwyreiniol y môr hwn. Mae'n estyn i lawr i arfordir gorllewinol Llydaw.
Last updated: 12 January 2022
Welsh: ymreolaeth
English: autonomy
Status B
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: Rhaglen Arweinyddiaeth I Benaethiaid mewn Swydd
Last updated: 22 May 2003
Welsh: ymreolaeth
English: autonomy
Status B
Subject: General
Part of speech: Noun, Feminine, Singular
Definition: Annibyniaeth bersonol.
Last updated: 18 May 2023
Welsh: ymreolaeth gyllidol
English: fiscal autonomy
Status A
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Last updated: 5 February 2014
Welsh: ymrestru
English: enrol (oneself)
Status C
Subject: Education
Part of speech: Verb
Definition: To enrol oneself eg for a course.
Last updated: 9 February 2009
Welsh: ymroddiad
English: dedication
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Rhaglen Arweinyddiaeth I Benaethiaid mewn Swydd
Context: To a cause or belief.
Last updated: 22 May 2003
Welsh: Ymroi
English: Striving
Status C
Subject: Personnel
Part of speech: Verb
Definition: One of the four performance management competencies 2011-2012.
Context: Un o bedair thema cymwyseddau Rheoli Perfformiad 2011-12. Dyma'r lleill: Meddwl, Ymwneud a Gwneud.
Last updated: 7 June 2011
Welsh: ymroi i
English: participate actively
Status C
Subject: Education
Part of speech: Verb
Last updated: 29 September 2005
Welsh: Ymrwymedig i Atebion i Hybu Teithio Cynaliadwy
English: Committed to Sustainable Travel Solutions
Status C
Subject: Transport
Last updated: 11 July 2008
Welsh: ymrwymiad amser
English: time commitment
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last updated: 8 December 2004
Welsh: ymrwymiad ar blastigion
English: plastics pact
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Context: Cadarnhaodd y Gweinidog hefyd fod Llywodraeth Cymru wedi llofnodi 'Ymrwymiad ar Blastigion' WRAP (Rhaglen Gweithredu'r Cynllun Gwastraff ac Adnoddau), sef ymrwymiad gan fusnesau i leihau maint y gwastraff plastig sy'n cael ei gynhyrchu yn y DU.
Last updated: 20 June 2018
Welsh: ymrwymiad ar y cyd
English: mutual undertaking
Status B
Subject: Planning
Part of speech: Masculine, Singular
Definition: Cytundeb rhwng awdurdodau caffael a pherchnogion tir, y tu allan i’r broses brynu orfodol, i sicrhau bod cynlluniau datblygu yn cael eu gweithredu ac i sicrhau bod tir yn cael ei ailddefnyddio'n briodol.
Last updated: 18 November 2021
Welsh: ymrwymiadau lleihau allyriadau
English: emission reduction commitments
Status B
Subject: Environment
Part of speech: Noun, Plural
Context: Cytunwyd ar welliant 2012 ymysg y Partïon gyda'r bwriad o ddiogelu iechyd pobl a'r amgylchedd yn well fyth trwy bennu ymrwymiadau lleihau allyriadau ar gyfer pum llygrydd aer i'w cyflawni erbyn 2020 a diweddaru gwerthoedd terfyn allyriadau llygryddion aer yn y tarddiad.
Last updated: 16 September 2024
Welsh: Ymrwymiad Cenedlaethol i Wasanaeth o Safon
English: National Quality of Service Commitment
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 30 August 2012
Welsh: ymrwymiad contractiol rhwymol
English: binding contractual commitment
Status C
Subject: Law
Part of speech: Noun, Masculine, Singular
Plural: ymrwymiadau contractiol rhwymol
Context: I roi effaith i'r ymrwymiad hwn, amgaeaf lythyr safonol a fyddai'n darparu ymrwymiad contractiol rhwymol rhwng y cyflogwr a'r clinigydd.
Last updated: 17 January 2020
Welsh: ymrwymiad cymunedau
English: community buy-in
Status C
Subject: Community development
Part of speech: Noun, Masculine, Singular
Last updated: 20 March 2013
Welsh: Ymrwymiad Effeithlonrwydd Ynni
English: Energy Efficiency Commitment
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: EEC. A programme encouraging domestic gas and electricity customers to improve energy efficiency.
Last updated: 1 July 2005
Welsh: ymrwymiad etifeddol
English: legacy commitment
Status A
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last updated: 6 April 2011
Welsh: Ymrwymiad Gwasanaeth Cyffredinol
English: Universal Service Commitment
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Definition: USC
Last updated: 18 May 2012
Welsh: Ymrwymiad Gwasanaeth Cyffredinol
English: USC
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Definition: Universal Service Commitment
Last updated: 18 May 2012
Welsh: Ymrwymiad Lleihau Carbon
English: Carbon Reduction Commitment
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Definition: CRC
Last updated: 21 June 2010
Welsh: Ymrwymiad Lleihau Carbon
English: CRC
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Definition: Carbon Reduction Commitment
Last updated: 21 June 2010
Welsh: ymrwymiad pontio newydd Tir Cynnal
English: new transitional Tir Cynnal commitment
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 18 August 2009
Welsh: Ymrwymiad Taledig a Ganiateir
English: Permitted Paid Engagement
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Plural: Ymrwymiadau Taledig a Ganiateir
Notes: Yng nghyd-destun y rheolau ar ganiatáu ymwelwyr busnes tymor byr, ac artistiaid perfformio yn benodol, i Brydain.
Last updated: 25 February 2021
Welsh: ymrwymiad tîm
English: team commitment
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Rhaglen Arweinyddiaeth I Benaethiaid mewn Swydd
Last updated: 22 May 2003
Welsh: Ymrwymiad y Claf
English: Patient Undertaking
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: It is important that mutual respect is shown between employees, patients and their relatives/carers. However, Trusts and Local Health Boards will, after giving consideration to all other options, seek to exclude patients and relatives from their premises where acts of violence and aggression towards staff becomes unacceptable. This action would not be undertaken lightly. Under such circumstances a decision may be made to serve a Patient Undertaking.
Last updated: 17 November 2011
Welsh: Ymrwymo i chwistrellu slyri ar dir cymwys
English: Commit to slurry injection on eligible land
Status C
Subject: Agriculture
Part of speech: Verb
Context: In the context of Glastir.
Last updated: 8 July 2010
Welsh: ymrwymo i drefniant
English: enter into arrangement
Status C
Subject: Education
Part of speech: Verb
Last updated: 9 January 2025
Welsh: ymrwymo i gytundeb
English: enter into agreement
Status C
Subject: General
Part of speech: Verb
Last updated: 1 November 2010
Welsh: ymrwymo mewn trefniant
English: enter into an arrangement
Status C
Subject: Law
Part of speech: Verb
Last updated: 9 February 2009
Welsh: ymrymuso’r gymuned
English: community empowerment
Status C
Subject: Community development
Part of speech: Verb
Context: Attention is focused on creating strong networks within the community rather than on the key public agencies.
Last updated: 3 December 2012
Welsh: ymsefydlu
English: become established
Status A
Subject: Environment
Part of speech: Verb
Notes: Yng nghyd-destun rhywogaethau mewn cynefinoedd newydd.
Last updated: 22 April 2025
Welsh: ymsuddiant
English: subsidence
Status A
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 30 April 2024
Welsh: Ymuno i Drechu Problemau Drwg
English: Ganging-up on the Wicked Issues
Status C
Subject: Social services
Part of speech: Verb
Last updated: 12 June 2007
Welsh: Ymunwch Nawr!
English: Sign Up Now
Status C
Subject: Education
Definition: A marketing campaign organised and funded by the European Social Fund (ESF), ELWa and NIACE to encourage the demand for learning.
Last updated: 10 January 2007