TermCymru

Results are displayed in alphabetical order.
English: anthracene
Welsh: anthrasen
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 1 November 2010
English: anthracite
Welsh: glo carreg
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 4 February 2009
English: anthrax
Welsh: anthracs
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 24 April 2006
English: Anthrax Order 1991
Welsh: Gorchymyn Anthracs 1991
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 31 May 2006
English: anthropogenic
Welsh: anthropogenig
Status B
Subject: General
Part of speech: Adjective
Last Updated: 1 June 2023
English: anti-atom
Welsh: gwrth-atom
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Context: Nuclear physics
Last Updated: 16 March 2012
English: anti-avoidance rule
Welsh: rheol yn erbyn osgoi trethi
Status A
Subject: Law
Part of speech: Noun, Feminine, Singular
Plural: rheolau yn erbyn osgoi trethi
Definition: Darpariaeth gyfreithiol a gynlluniwyd i atal rhai trefniadau penodol a fyddai fel arall yn lleihau atebolrwydd treth y trethdalwr.
Notes: Pan fydd 'anti-avoidance' yn codi ar ei ben ei hun, gellid defnyddio 'gwrthweithio osgoi trethi'.
Last Updated: 6 October 2023
English: anti-bacterial
Welsh: gwrthfacterol
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
English: anti-bacterial sanitiser spray
Welsh: chwistrellydd gwrthfacterol
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: chwistrellyddion glanweithdra gwrthfacteria
Definition: Teclyn i ysgeintio hylif glanweithio ar gyfer arwynebau.
Last Updated: 4 April 2019
English: anti-bacterial sanitiser spray
Welsh: hylif gwrthfacterol
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Hylif glanweithio ar gyfer arwynebau a gaiff ei ysgeintio o declyn pwrpasol.
Last Updated: 4 April 2019
English: anti-bacterial soap
Welsh: sebon gwrthfacterol
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 29 June 2012
English: anti bark collar
Welsh: coler atal cyfarth
Status C
Subject: Animals
Part of speech: Noun, Feminine, Singular
Last Updated: 23 March 2010
English: antibiotic
Welsh: gwrthfiotig
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
English: antibiotic resistance markers
Welsh: marcwyr ymwrthedd i wrthfiotigau
Status B
Subject: Agriculture
Part of speech: Noun, Plural
Definition: mewn biobeirianneg
Last Updated: 30 July 2003
English: Antibiotics will not get rid of your cold
Welsh: Annwyd? Nid gwrthfiotigau yw'r ateb
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Context: Poster
Last Updated: 14 November 2012
English: anti-Black racism
Welsh: hiliaeth yn erbyn pobl Ddu
Status B
Subject: Community development
Part of speech: Noun, Feminine, Singular
Definition: Math penodol o hiliaeth sy'n cyfeirio at unrhyw weithred o drais a gwahaniaethu, gan gynnwys iaith hiliol, wedi'i hysgogi gan gamdriniaethau hanesyddol ac ystrydebau negyddol, sy'n arwain at allgáu a dad-ddyneiddio pobl o dras Affricanaidd. Gall fod ar sawl ffurf: atgasedd, rhagfarn, gorthrwm, hiliaeth a gwahaniaethu strwythurol a sefydliadol, ymysg eraill.
Last Updated: 25 March 2021
English: antibodies
Welsh: gwrthgyrff
Status C
Subject: Health
Part of speech: Noun, Plural
Last Updated: 16 August 2004
English: antibody
Welsh: gwrthgorff
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 15 March 2004
English: antibody test
Welsh: prawf gwrthgyrff
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: profion gwrthgyrff
Last Updated: 5 June 2020
English: antibody testing
Welsh: profi am wrthgyrff
Status B
Subject: Health
Part of speech: Verb
Last Updated: 22 July 2020
English: antibody treatment
Welsh: triniaeth â gwrthgyrff
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Plural: triniaethau â gwrthgyrff
Last Updated: 26 March 2020
English: anti-bullying
Welsh: gwrthfwlio
Status B
Subject: Education
Part of speech: Adjective
Last Updated: 2 July 2025
English: anticholinesterase
Welsh: gwrthcolinesterasau
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthcolinesterasau
Last Updated: 6 November 2019
English: anticipated out-turn
Welsh: alldro a ragwelir
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last Updated: 11 July 2007
English: anticipatory care
Welsh: rhag-gynllunio gofal
Status B
Subject: Health
Part of speech: Verb
Last Updated: 25 June 2020
English: anticipatory care planning
Welsh: rhag-gynllunio gofal
Status B
Subject: Health
Part of speech: Verb
Definition: Anticipatory care planning (ACP) helps you make informed choices about how and where you want to be treated and supported in the future. It requires health and care practitioners to work with people and their carers to ensure the right thing is done at the right time by the right person to achieve the best outcome.
Last Updated: 21 February 2018
English: anticipatory governance
Welsh: llywodraethiant rhagddyfalus
Status A
Subject: General
Part of speech: Noun, Masculine, Singular
Definition: System lywodraethiant sy'n mynd ati'n fwriadol i ragargoeli tueddiadau, gwneud rhagolygon a lleihau risg wrth wneud penderfyniadau.
Notes: O bryd i'w gilydd bydd gofynion gramadegol y frawddeg yn golygu bod angen defnyddio'r berfenw 'llywodraethu' yn lle’r enw ‘llywodraethiant’. Serch hynny, argymhellir cadw at 'llywodraethiant' hyd y bo modd. Gweler y cofnod am 'governance'.
Last Updated: 8 May 2025
English: Anticipatory Prescribing Programme
Welsh: Rhaglen Rhagweld Presgripsiwn
Status A
Subject: Health
Part of speech: Proper noun, Feminine, Singular
Last Updated: 5 August 2014
English: anticoagulant
Welsh: gwrthgeulydd
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 3 October 2006
English: anticoagulation therapy
Welsh: therapi gwrthgeulo
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: therapïau gwrthgeulo
Last Updated: 2 April 2020
English: anti-convulsive therapy
Welsh: therapi gwrth-ddirdynnol
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 15 February 2010
English: anti-depressants
Welsh: gwrth-iselyddion
Status B
Subject: Health
Part of speech: Noun, Plural
Last Updated: 16 August 2004
English: anti-doping
Welsh: atal dopio
Status C
Subject: Health
Part of speech: Verb
Last Updated: 27 May 2004
English: antifibrotic
Welsh: gwrthffibrotydd
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthffibrotyddion
Last Updated: 6 November 2019
English: antifouling
Welsh: paent rhag tyfiant
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Paent cemegol i gadw pethau rhag tyfu ar waelodion llongau.
Last Updated: 11 May 2006
English: antigen
Welsh: antigen
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 10 December 2009
English: antigenic drift
Welsh: drifft antigenig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Newidiadau neu fwtaniadau bychain i enynnau feirws, sy'n gallu arwain at newidiadau yn y proteinau ar arwyneb y feirws ei hun. Dros amser, gall hyn olygu bod unigolyn yn mynd yn fwy tebygol o gael eu heintio gan y feirws, am fod y feirws wedi newid digon i system imiwnedd yr unigolyn hwnnw fethu ag adnabod a lladd y feirws.
Notes: Cymharer ag antigenic shift / shifft antigenig.
Last Updated: 1 July 2021
English: antigenic escape
Welsh: dihangiad antigenig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Sefyllfa lle bydd feirws wedi addasu drwy fwtaniad i amrywiolyn sy'n osgoi sylw system imiwnedd y corff a heintiwyd. Gall hyn beri i frechlynnau a gynlluniwyd ar gyfer y straen neu straeniau gwreiddiol fod yn llai effeithiol yn erbyn yr amrywiolyn newydd.
Notes: Mae'r term hwn yn gyfystyr ag immune escape / dihangiad imiwnyddol.
Last Updated: 11 February 2021
English: antigenic shift
Welsh: shifft antigenig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Newid mawr a sydyn mewn feirws, sy'n arwain at broteinau newydd ar arwyneb y feirws eu hun. Gall hyn olygu bod is-fath newydd o feirws yn dod i fodolaeth, sy'n fwy tebygol o heintio pobl.
Notes: Cymharer ag antigenic drift / drifft antigenig.
Last Updated: 1 July 2021
English: antigen lateral flow test
Welsh: prawf llif unffordd antigenau
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: profion llif unffordd antigenau
Context: Os caiff person ganlyniad positif o brawf llif unffordd antigenau mae'n ofynnol iddo gwblhau prawf antigenau PCR safonol a fyddai'n cael ei gynnwys yn y data a gyflwynir.
Last Updated: 10 December 2020
English: antigen test
Welsh: prawf antigenau
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: profion antigenau
Last Updated: 5 June 2020
English: antigen testing
Welsh: profi am antigenau
Status A
Subject: Health
Part of speech: Verb
Last Updated: 5 June 2020
English: anti-glare screen
Welsh: sgrin wrthddallu
Status C
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last Updated: 28 April 2005
English: Antigua and Barbuda
Welsh: Antigua a Barbuda
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
English: Anti Human Trafficking Co-ordinator
Welsh: Cydgysylltydd Atal Masnachu Pobl
Status C
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Context: Changed to "Anti Slavery Co-ordinator" in 2014.
Last Updated: 24 January 2011
English: anti-hydrogen measurement
Welsh: mesuriad gwrth-hydrogen
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Context: Nuclear physics
Last Updated: 16 March 2012
English: anti-idling
Welsh: gwrthsegura
Status A
Subject: Environment
Part of speech: Verb
Definition: Mynd i'r afael ag ymddygiadau ymysg gyrwyr lle gadewir i'r injan segura, yn bennaf er mwyn atal llygredd.
Last Updated: 26 January 2023
English: anti-LGBTQ+
Welsh: gwrth-LHDTC+
Status B
Subject: General
Part of speech: Adjective
Last Updated: 8 December 2022
English: anti-malware software
Welsh: meddalwedd wrthfaleiswedd
Status A
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last Updated: 5 March 2013
English: anti-matter
Welsh: gwrthfater
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Context: Nuclear physics
Last Updated: 16 March 2012