TermCymru

Results are displayed in English alphabetical order A-Z
English: ATI
Welsh: Mynediad at Wybodaeth
Status C
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Definition: Access to Information
Last Updated: 6 July 2006
English: at issue
Welsh: yn bwnc dadl
Status A
Subject: Politics
Part of speech: Adverb
Context: Bydd deiseb etholiad ar gyfer etholiad i’r Senedd yn bwnc dadl—(a) pan fydd y deisebydd yn rhoi'r sicrhad am gostau drwy adneuo arian sy'n hafal i swm y sicrhad sy’n ofynnol, yr adeg y rhoddir y sicrhad, a (b) mewn unrhyw achos arall, pa un bynnag o'r canlynol sy'n digwydd ddiweddaraf—(i) pan fydd yr amser rhagnodedig ar gyfer gwneud gwrthwynebiadau o dan erthygl 94(5) yn dod i ben, neu (ii) pan fydd gwrthwynebiad yn cael ei wneud, yr adeg y gwrthodir neu y dilëir y gwrthwynebiad hwnnw.
Notes: Yng nghyd-destun achosion cyfreithiol mewn perthynas â deisebau etholiad o dan Reolau Deisebau Etholiad 1960, fel y'u diwygiwyd gan Orchymyn Senedd Cymru (Cynrychiolaeth y Bobl) 2025. Daw'r frawddeg gyd-destunol o'r Gorchymyn hwnnw.
Last Updated: 23 March 2026
English: ATL
Welsh: Cymdeithas Athrawon a Darlithwyr
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: Association of Teachers and Lecturers
Last Updated: 5 February 2008
English: Atlantic Arc
Welsh: Bwa'r Iwerydd
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 25 February 2003
English: Atlantic Area
Welsh: Ardal yr Iwerydd
Status C
Subject: Europe
Part of speech: Noun, Feminine, Singular
Last Updated: 11 September 2007
English: Atlantic Area First Level Control Approved Projects Workshop
Welsh: Gweithdy Prosiectau Cymeradwy Lefel Rheoli Cyntaf Ardal yr Iwerydd
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last Updated: 4 August 2010
English: Atlantic Area Transnational Programme
Welsh: Rhaglen Drawswladol Ardal yr Iwerydd
Status C
Subject: Planning
Part of speech: Noun, Feminine, Singular
Last Updated: 12 December 2011
English: Atlantic Array
Welsh: Atlantic Array
Status A
Subject: Environment
Part of speech: Proper noun
Context: Name of proposed wind farm.
Last Updated: 20 November 2013
English: Atlantic Challenge
Welsh: Her yr Iwerydd
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: regata yn Abergwaun i bobl ifanc o Ewrop
Last Updated: 15 March 2004
English: Atlantic College
Welsh: Coleg Iwerydd
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last Updated: 16 February 2004
English: Atlantic decalcified fixed dune
Welsh: twyn sefydlog datgalchedig Iwerydd
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 12 December 2013
English: Atlantic dune woodland
Welsh: coetir twyni Iwerydd
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 12 December 2013
English: Atlantic Healthy Food Eco-system
Welsh: Ecosystem Bwyd Iach yr Iwerydd
Status B
Subject: Europe
Part of speech: Noun, Feminine, Singular
Notes: Menter Ewropeaidd.
Last Updated: 12 November 2020
English: Atlantic Meridional Overturning Circulation
Welsh: Cylchrediad Gwrthdroadol Meridianaidd Iwerydd
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: System fawr o geryntau môr yng nghefnfor Iwerydd sy’n cludo dŵr cynnes o wyneb y môr tua’r gogledd ac yn dychwelyd dŵr oer dwfn tua’r de. Mae’n chwarae rhan hanfodol wrth reoleiddio’r hinsawdd drwy ailddosbarthu gwres o gwmpas y blaned a dylanwadu ar batrymau tywydd.
Context: Mae gwyddonwyr yn pryderu bod Cylchrediad Gwrthdroadol Meridianaidd Iwerydd yn gwanhau, gan y gallai hynny gael effaith sylweddol ar batrymau tywydd Ewrop.
Last Updated: 1 October 2025
English: Atlantic Ocean
Welsh: Cefnfor Iwerydd
Status C
Subject: Place-names
Part of speech: Noun, Masculine, Singular
Last Updated: 30 November 2004
English: Atlantic pomfret
Welsh: merfog môr
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Brama brama
Context: Also known as "Ray's bream".
Last Updated: 17 October 2013
English: Atlantic puffin
Welsh: pâl
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Plural: palod
Definition: Fratercula arctica
Last Updated: 28 February 2019
English: Atlantic Rim Collaboratory
Welsh: Atlantic Rim Collaboratory
Status A
Subject: Europe
Part of speech: Proper noun
Notes: Menter Ewropeaidd
Last Updated: 12 November 2020
English: Atlantic salmon
Welsh: eog
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Plural: eogiaid
Definition: Salmo salar
Last Updated: 23 March 2021
English: Atlantic Salmon Trust
Welsh: Ymddiriedolaeth Eogiaid Iwerydd
Status C
Subject: Environment
Part of speech: Proper noun, Feminine, Singular
Context: Teitl cwrteisi.
Last Updated: 11 June 2014
English: Atlantic salt marsh
Welsh: morfa heli Iwerydd
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: morfeydd heli Iwerydd
Last Updated: 23 March 2021
English: Atlantic salt meadow
Welsh: dôl heli Iwerydd
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: dolydd heli Iwerydd
Last Updated: 23 March 2021
English: Atlantic Wharf
Welsh: Glanfa'r Iwerydd
Status B
Subject: Place-names
Part of speech: Proper noun
Last Updated: 22 May 2003
English: Atlas of Variation
Welsh: Atlas Amrywiadau
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: Atlasau Amrywiadau
Definition: Adnodd sy’n dangos sut y mae ansawdd, defnydd neu ganlyniadau gwasanaethau iechyd penodol (ee gwasanaethau diabetes, neu wasanaethau cardiofasgwlaidd) yn amrywio ar draws ardaloedd daearyddol neu boblogaethau. Gellir ei ddefnyddio i ddod o hyd i amrywiadau clinigol direswm.
Last Updated: 12 January 2026
English: ATM
Welsh: peiriannau ATM
Status C
Subject: Finance and statistics
Part of speech: Noun, Plural
Last Updated: 31 May 2006
English: ATM
Welsh: Mynediad at Radd Meistr
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Access to Masters. A pioneering skills project for SMEs Delivered by Swansea University.
Last Updated: 27 January 2010
English: at market rent
Welsh: am renti'r farchnad
Status B
Subject: Housing
Last Updated: 13 January 2012
English: at mini-competition stage
Welsh: adeg cynnal y fini-gystadleuaeth
Status A
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Last Updated: 7 August 2013
English: atmospheric carbon
Welsh: carbon atmosfferig
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 16 January 2013
English: Atmospheric N-fixing plant
Welsh: Planhigion sy’n bachu Nitrogen o’r atmosffer
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Last Updated: 28 July 2010
English: at nil consideration
Welsh: heb unrhyw gost ynghlwm wrtho
Status C
Subject: Finance and statistics
Part of speech: Adjective
Context: Ymdrinnir â ffyrdd a strwythurau y tynnwyd eu statws fel gwarediadau o safbwynt cyfrifyddu heb unrhyw gost ynghlwm wrthynt. {114}
Last Updated: 19 September 2018
English: atomic absorption spectrometry
Welsh: sbectrometreg amsugniad atomig
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: Techneg ar gyfer mesur crynodiad elfennau penodol mewn sampl, drwy ddadansoddi'r golau a amsugnir gan atomau o'r elfennau hynny pan ydynt mewn cyflwr nwyol.
Notes: Term a ddefnyddir yn Rheoliadau Ychwanegion Bwyd Anifeiliaid (Awdurdodiadau) (Cymru) 2022.
Last Updated: 10 December 2024
English: at or post inquiry
Welsh: mewn neu ar ôl ymchwiliad
Status C
Subject: Local government
Part of speech: Neutral
Last Updated: 6 December 2005
English: at out-turn
Welsh: ar lefel alldro
Status C
Subject: Finance and statistics
Last Updated: 11 July 2007
English: A to Z
Welsh: A i Y
Status C
Subject: Finance and statistics
Last Updated: 7 March 2003
English: ATP
Welsh: ATP
Status C
Subject: Health
Part of speech: Neutral
Definition: Adult Treatment Panel
Last Updated: 23 September 2004
English: at pace
Welsh: yn ddi-oed
Status C
Subject: General
Part of speech: Adjective
Last Updated: 6 January 2011
English: atraumatic restorative treatment
Welsh: triniaeth adferol nad yw'n peri trawma
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Techneg i adfer dannedd yn sgil pydredd, heb ddefnyddio anesthetig a chan ddefnyddio offer llaw yn unig.
Notes: Defnyddir yr acronym Saesneg ART.
Last Updated: 2 April 2020
English: atrazine
Welsh: atrasin
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 1 November 2010
English: at rest
Welsh: disymud
Status B
Subject: Environment
Part of speech: Adjective
Definition: Ym maes ffiseg, disgrifiad o wrthrych nad yw’n symud o fewn ffrâm gyfeirio benodol. Mae hyn yn golygu bod ei felosedd yn sero o’i gymharu â’r ffrâm honno, er y gall fod yn symud o gymharu â ffrâm arall.
Context: Uned o fàs yw’r dalton, neu’r uned màs atomig unedig, sy’n hafal i un rhan o ddeuddeg o fàs atom carbon-12 niwtral di-rwym sydd yn ei gyflwr niwclear ac electronig isaf ac sy’n ddisymud.
Notes: Sylwer mai adferf fydd y ffurf Saesneg “at rest” gan amlaf. Gellir amrywio rhwng defnyddio’r ffurf Gymraeg “disymud” fel ansoddair neu adferf yn ôl y gofyn.
Last Updated: 23 December 2025
English: atrial fibrillation
Welsh: ffibriliad atrïaidd
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 5 July 2017
English: at risk of NEET/homelessness
Welsh: mewn perygl o fod yn NEET/digartref
Status B
Subject: Social services
Part of speech: Adjective
Last Updated: 31 October 2023
English: at risk water catchment
Welsh: dalgylch dŵr mewn perygl
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: dalgylchoedd dŵr mewn perygl
Last Updated: 5 February 2016
English: atrium
Welsh: atriwm
Status C
Subject: Housing
Part of speech: Noun, Masculine, Singular
Definition: in the Assembly
Last Updated: 4 January 2005
English: atrophic
Welsh: atroffig
Status B
Subject: Health
Part of speech: Adjective
Last Updated: 8 June 2016
English: atrophic age-related macular degeneration
Welsh: dirywiad maciwlaidd atroffig sy’n gysylltiedig ag oedran
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 25 March 2024
English: a Trust in financial recovery
Welsh: Ymddiriedolaeth sydd yn gorfod dilyn cynlluniau adfer ariannol
Status C
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Last Updated: 9 January 2003
English: at-symbol
Welsh: symbol at
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last Updated: 19 July 2005
English: ATT
Welsh: Hyfforddiant Technegwyr Hŷn
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Definition: Adult Technician Training
Last Updated: 6 July 2006
English: attach
Welsh: atodi
Status B
Subject: ICT
Part of speech: Verb
Last Updated: 19 July 2005