TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: gwrthateb
English: rebuttal
Status B
Subject: Politics
Part of speech: Noun, Masculine, Singular
Plural: gwrthatebion
Definition: A refutation, a counter-argument or contradiction.
Notes: Yng nghyd-destun herio straeon newyddion anghywir neu gamarweiniol.
Last updated: 15 July 2016
Welsh: gwrth-atom
English: anti-atom
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Context: Nuclear physics
Last updated: 16 March 2012
Welsh: gwrthblaid
English: opposition party
Status A
Subject: Politics
Part of speech: Noun, Feminine, Singular
Context: Lluosog: gwrthbleidiau.
Last updated: 2 February 2006
Welsh: gwrthbwysiad i’r grant bloc
English: block grant offset
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Context: Rwyf wedi galw ar Lywodraeth y DU i gytuno ar y fframwaith cyllidol i Gymru yn amlinellu sut y dylai’r gwrthbwysiad i’r grant bloc weithredu yn achos treth incwm a’r trethi datganoledig eraill yng Nghymru a sut y bydd ein terfyn benthyca cyfalaf yn cynyddu i adlewyrchu’r cynnydd yn y ffrwd refeniw annibynnol o drethi datganoledig.
Last updated: 21 April 2016
Welsh: gwrthbwyso carbon
English: carbon offsetting
Status C
Subject: Environment
Part of speech: Verb
Last updated: 6 June 2008
Welsh: Gwrthbwyso Carbon: Gwneud Ystad y Cynulliad yn fwy Gwyrdd
English: Carbon Offsetting: Greening the Assembly Estate
Status C
Subject: Environment
Part of speech: Verb
Last updated: 30 January 2007
Welsh: gwrthcolinesterasau
English: anticholinesterase
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthcolinesterasau
Last updated: 6 November 2019
Welsh: gwrthdaro
English: collide
Status B
Subject: Justice and order
Part of speech: Verb
Last updated: 29 August 2012
Welsh: gwrthdaro buddiannau
English: conflict of interest
Status B
Subject: Law
Part of speech: Noun, Masculine, Singular
Definition: Sefyllfa pan fo gan unigolyn neu endid fwy nag un set o gyfrifoldebau a rhwymedigaethau, ac y byddai cyflawni'r un set yn mynd yn groes i'r lleill. Gall gyfeirio at sefyllfa lle gall penderfyniad a wneir mewn rôl swyddogol effeithio ar fuddiannau personol, teuluol neu ariannol yr unigolyn mewn capasiti arall.
Last updated: 31 July 2024
Welsh: gwrthdaro wrth fasnachu
English: trade friction
Status B
Subject: Economic development
Part of speech: Verb
Last updated: 5 July 2018
Welsh: gwrthderfysgaeth
English: counter terrorism
Status B
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Last updated: 29 August 2012
Welsh: gwrthdrawiad
English: collision
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 8 December 2004
Welsh: gwrthdrawiad ffordd
English: road collision
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: gwrthdrawiadau ffyrdd
Definition: Digwyddiad lle mae cerbyd yn taro gwrthrych arall, person neu gerbyd arall ar ffordd gyhoeddus.
Context: Mae’r ystadegau’n dangos cynnydd bach yn nifer y gwrthdrawiadau ffyrdd a adroddwyd dros y flwyddyn ddiwethaf.
Notes: Sylwer na ddylid defnyddio ‘damwain ffordd’. Dewiswyd y geiriau Cymraeg a Saesneg yn ofalus gan nad ydynt yn awgrymu bai ar ran unrhyw un. Mae'r ffurf road traffic collision / gwrthdrawiad traffig ffyrdd yn gyfystyr.
Last updated: 28 January 2026
Welsh: gwrthdrawiadol
English: conflicting
Status A
Subject: Personnel
Part of speech: Adjective
Last updated: 7 October 2002
Welsh: gwrthdrawiad traffig ffyrdd
English: road traffic collision
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: gwrthdrawiadau traffig ffyrdd
Notes: Mae'r ffurf road collision / gwrthdrawiad ffordd yn gyfystyr.
Last updated: 28 January 2026
Welsh: gwrthdrawol
English: confrontational
Status A
Subject: Personnel
Part of speech: Adjective
Last updated: 7 October 2002
Welsh: gwrthdroi
English: overturn
Status A
Subject: Law
Part of speech: Verb
Definition: eg to overturn a conviction/decision
Last updated: 25 November 2003
Welsh: gwrth-dwyll
English: counter fraud
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: eg to fight fraud
Last updated: 1 December 2003
Welsh: gwrthedd
English: resistivity
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Mesur o allu sylwedd i atal llif trydan
Last updated: 28 March 2019
Welsh: gwrthfacterol
English: anti-bacterial
Status A
Subject: Health
Part of speech: Adjective
Definition: A product or process that kills bacteria or inhibits their growth.
Last updated: 10 October 2007
Welsh: gwrthfater
English: anti-matter
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Context: Nuclear physics
Last updated: 16 March 2012
Welsh: gwrthfeirol
English: antiviral
Status B
Subject: Health
Part of speech: Adjective
Definition: Yn effeithiol yn erbyn neu’n gwrthweithio effeithiau feirws neu feirysau.
Notes: Dyma’r ansoddair. Sylwer y defnyddir ‘antiviral’ yn gyffredin hefyd fel enw, i olygu ‘cyffur gwrthfeirysol’. Gweler y cofnod ar wahân am y cysyniad hwnnw.
Last updated: 8 December 2021
Welsh: gwrthffeithiol
English: counterfactual
Status B
Subject: Law
Part of speech: Adjective
Last updated: 3 July 2012
Welsh: gwrthffibrotydd
English: antifibrotic
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthffibrotyddion
Last updated: 6 November 2019
Welsh: gwrthffwng polyen
English: polyene antifungal
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthffwngau polyen
Last updated: 6 November 2019
Welsh: gwrthficrobaidd
English: antimicrobial
Status C
Subject: Health
Part of speech: Adjective
Definition: A product or process that kills germs (microbes) or inhibits their growth.
Last updated: 10 October 2007
Welsh: gwrthfiotig
English: antibiotic
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthfiotigau
Notes: Defnyddir y ffurf luosog antibiotics/gwrthfiotigau yn aml wrth gyfeirio at un cwrs o un math o feddyginiaeth wrthfiotig.
Last updated: 24 September 2025
Welsh: gwrthfiotig beta-lactam
English: beta-lactam antibiotic
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthfiotigau beta-lactam
Last updated: 6 November 2019
Welsh: gwrthfiotig cytotocsig
English: cytotoxic antibiotic
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthfiotigau cytotocsig
Last updated: 6 November 2019
Welsh: gwrthfwlio
English: anti-bullying
Status B
Subject: Education
Part of speech: Adjective
Last updated: 2 July 2025
Welsh: gwrthgaethwasiaeth
English: anti-slavery
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last updated: 2 March 2023
Welsh: Gwrthgaethwasiaeth Cymru
English: Anti-Slavery Wales
Status B
Subject: Community development
Part of speech: Proper noun
Notes: Cynhadledd a gynhelir yn 2023.
Last updated: 19 April 2023
Welsh: Gwrthgaethwasiaeth Cymru – Dysgu Ar-lein
English: Anti-Slavery Wales Online Learning
Status B
Subject: Personnel
Part of speech: Proper noun
Last updated: 19 December 2024
Welsh: gwrthgeulo drwy'r geg
English: oral anticoagulation
Status C
Subject: Health
Last updated: 18 November 2021
Welsh: gwrthgeulydd
English: anticoagulant
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 3 October 2006
Welsh: gwrthgloddiau hynafol
English: ancient earthworks
Status B
Subject: Estates and Cadw
Part of speech: Noun, Plural
Last updated: 30 July 2003
Welsh: gwrthgolocwedd
English: counterclockwise
Status B
Subject: ICT
Part of speech: Adjective
Last updated: 19 July 2005
Welsh: gwrthgorff
English: antibody
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 15 March 2004
Welsh: gwrthgorff monoclonaidd
English: monoclonal antibody
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthgyrff monoclonaidd
Definition: Math o brotein a gaiff ei wneud mewn labordy ac sy'n gallu ymlynu at dargedau penodol fel y gwrthgyrff ar wyneb feirws neu gell canser. Mae pob gwrthgorff monoclonaidd yn cael ei greu i ymlynu at un gwrthgorff penodol yn unig.
Last updated: 9 December 2021
Welsh: gwrthgorff niwcleocapsid
English: nucleocapsid antibody
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthgyrff niwcleocapsid
Last updated: 19 August 2021
Welsh: gwrthgorff sbigyn
English: spike antibody
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthgyrff sbigyn
Last updated: 19 August 2021
Welsh: gwrthgylchol
English: countercyclical
Status C
Subject: Economic development
Part of speech: Adjective
Context: Actions aimed at smoothing out swings in economic activity.
Last updated: 29 September 2009
Welsh: gwrthgyrff
English: antibodies
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 16 August 2004
Welsh: gwrth-hiliaeth
English: anti-racism
Status B
Subject: Community development
Part of speech: Noun, Feminine, Singular
Last updated: 2 July 2025
Welsh: gwrth-hiliol
English: antiracist
Status A
Subject: General
Part of speech: Adjective
Notes: Daw'r term hwn o gasgliad y Grŵp Gorchwyl a Gorffen ar Derminoleg ym maes Cydraddoldeb o ran Hil ac Ethnigrwydd.
Last updated: 18 April 2023
Welsh: gwrth-hiliol
English: anti-racist
Status A
Subject: General
Part of speech: Adjective
Notes: Daw'r term hwn o gasgliad y Grŵp Gorchwyl a Gorffen ar Derminoleg ym maes Cydraddoldeb o ran Hil ac Ethnigrwydd.
Last updated: 18 April 2023
Welsh: gwrth-hysbysiad
English: counter-notice
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Plural: gwrth-hysbysiadau
Last updated: 18 February 2026
Welsh: gwrthiant tân
English: fire resistance
Status B
Subject: Fire and rescue
Part of speech: Noun, Masculine, Singular
Definition: Gallu rhywbeth i wrthsefyll niwed gan dân.
Last updated: 12 November 2025
Welsh: gwrth-iselyddion
English: anti-depressants
Status B
Subject: Health
Part of speech: Noun, Plural
Last updated: 16 August 2004
Welsh: gwrth-LHDTC+
English: anti-LGBTQ+
Status B
Subject: General
Part of speech: Adjective
Last updated: 8 December 2022