TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: gwresogi ag olew neu nwy
English: oil and gas heating
Status C
Subject: Environment
Part of speech: Verb
Last updated: 8 July 2008
Welsh: gwresogi, awyru ac aerdymheru
English: heating ventilation and air conditioning
Status B
Subject: Environment
Part of speech: Verb
Definition: Defnyddio systemau gwresogi, awyru ac aerdymheru mecanyddol mewn man dan do er mwyn addasu tymheredd a lleithder y lle hwnnw.
Last updated: 7 July 2020
Welsh: gwresogi, awyru ac aerdymheru
English: HVAC
Status B
Subject: Environment
Part of speech: Verb
Notes: Dyma'r acronym Saesneg a ddefnyddir am heating, ventilation and air conditioning.
Last updated: 7 July 2020
Welsh: Gwresogi Domestig
English: Domestic Heating
Status A
Subject: Education
Part of speech: Verb
Context: Apprenticeship learning pathway.
Last updated: 30 October 2012
Welsh: gwresogyddion catalytig
English: catalytic heaters
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 11 July 2008
Welsh: gwresogyddion dŵr solar
English: solar water heaters
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 10 January 2007
Welsh: gwresogyddion stôr
English: storage heaters
Status C
Subject: Housing
Part of speech: Noun, Plural
Last updated: 11 July 2008
Welsh: gwresogyddion symudol LPG
English: LPG portable heaters
Status C
Subject: Housing
Part of speech: Noun, Plural
Last updated: 11 July 2008
Welsh: gwres rheiddiol
English: radiant heating
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 13 December 2010
Welsh: gwrtaith
English: fertiliser
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: organig ac artiffisial
Last updated: 22 September 2004
Welsh: gwrtaith anorganig
English: inorganic fertiliser
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Glastir ACRES
Last updated: 14 July 2010
Welsh: gwrtaith artiffisial
English: bagged fertiliser
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: neu ' gwrtaith sachau'
Last updated: 4 October 2005
Welsh: gwrtaith artiffisial organig
English: bagged organic fertiliser
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 20 January 2006
Welsh: gwrtaith ffosffad a weithgynhyrchwyd
English: manufactured phosphate fertiliser
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: gwrteithiau ffosffad a weithgynhyrchwyd
Last updated: 1 October 2020
Welsh: gwrtaith nitrogen
English: nitrogen fertiliser
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: gwrteithiau nitrogen
Last updated: 1 October 2020
Welsh: gwrtaith nitrogen a weithgynhyrchwyd
English: manufactured nitrogen fertiliser
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: gwrteithiau nitrogen a weithgynhyrchwyd
Last updated: 1 October 2020
Welsh: gwrtaith sachau
English: manufactured fertiliser
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 2 July 2007
Welsh: gwrtharwydd
English: contraindication
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Condition or situation that makes a treatment or procedure inadvisable e.e. “The BNF does not mention allergy to the drug as a contra-indication”.
Last updated: 15 April 2004
Welsh: gwrtharwyddo
English: contraindicate
Status A
Subject: Health
Part of speech: Verb
Last updated: 16 April 2003
Welsh: gwrthasid
English: antacid
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthasidau
Last updated: 6 November 2019
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