TermCymru

Results are displayed in Welsh alphabetical order A-Y

Welsh: deunydd eildro

English: recycled material

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 24 June 2003

Welsh: deunydd estron

English: foreign matter

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 28 February 2012

Welsh: deunydd ffynhonnell

English: source material

Status B

Subject: Food

Part of speech: Noun, Masculine, Singular

Plural: deunyddiau ffynhonnell

Context: Cyfyngiadau ar ddefnyddio cyflasynnau neu gynhwysion bwyd ac iddynt briodweddau cyflasyn a gynhyrchir o ddeunyddiau ffynhonnell penodol.

Last updated: 17 April 2024

Welsh: deunydd genetig

English: genetic material

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 6 July 2005

Welsh: deunydd glanhau

English: cleaning agent

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 19 April 2007

Welsh: deunydd gorchuddio

English: covering material

Status B

Subject: Law

Part of speech: Noun, Masculine, Singular

Last updated: 25 July 2012

Welsh: deunydd gorwedd

English: bedding (animal)

Status C

Subject: Agriculture

Last updated: 10 December 2010

Welsh: deunydd gronynnol

English: particulate matter

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: Cymysgedd o ronynnau solet a defnynnau o hylif yn yr aer.

Last updated: 11 July 2019

Welsh: deunydd gronynnol

English: PM

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Notes: Dyma'r acronym Saesneg a ddefnyddir am particulate matter.

Last updated: 26 January 2023

Welsh: deunydd gronynnol cynradd

English: primary particle matter

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Notes: Caiff llygredd gronynnol ei gynhyrchu gan ffynonellau cynradd ac eilaidd. Caiff deunydd gronynnol cynradd ei allyrru'n uniongyrchol o safleoedd adeiladu, tanau gwyllt, llosgi coed, pyllau graean, gweithgaredd amaethyddol, a ffyrdd llychlyd. Caiff deunydd gronynnol eilaidd ei ffurfio yn yr atmosffer drwy adweithiau cemegol cymhleth.

Last updated: 16 September 2024

Welsh: deunydd gronynnol dan 10 micron

English: sub-10 micron particulate matter

Status C

Subject: General

Part of speech: Noun, Masculine, Singular

Last updated: 27 January 2010

Welsh: deunydd gronynnol eilaidd

English: secondary particle matter

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 16 September 2024

Welsh: deunydd hybu tyfiant

English: growth promoter

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 16 October 2009

Welsh: deunydd/hylif cadw

English: preservative

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 27 February 2006

Welsh: deunydd hylifol

English: liquid matter

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 17 July 2012

Welsh: deunydd hyrwyddo brand Cymru

English: Wales brand promotional material

Status C

Subject: Europe

Part of speech: Noun, Masculine, Singular

Last updated: 1 September 2010

Welsh: Deunyddiau a Chrefftwaith

English: Materials and Workmanship

Status C

Subject: Housing

Part of speech: Noun, Plural

Last updated: 18 August 2014

Welsh: Deunyddiau a Gweithgynhyrchu Uwch

English: Advanced Materials & Manufacturing

Status C

Subject: Economic development

Part of speech: Noun, Plural

Last updated: 12 November 2010

Welsh: Deunyddiau a Gweithgynhyrchu Uwch - Swyddog Gweithredol Strategol

English: Advanced Materials and Manufacturing - Strategy Executive

Status C

Subject: Welsh Government posts and departments

Part of speech: Noun, Plural

Last updated: 6 April 2011

Welsh: Deunyddiau Asesu Dewisol

English: OAM

Status C

Subject: Education

Part of speech: Noun, Plural

Definition: Optional Assessment Materials

Last updated: 25 July 2005

Welsh: Deunyddiau Asesu Dewisol

English: Optional Assessment Materials

Status C

Subject: Education

Part of speech: Noun, Plural

Definition: OAM

Last updated: 25 July 2005

Welsh: Deunyddiau Asesu Dewisol ar gyfer Saesneg, Cymraeg a Chymraeg Ail Iaith, CA 2 a 3

English: Optional Assessment Materials in English, Welsh, and Welsh Second Language at KS2 and 3

Status C

Subject: Education

Part of speech: Noun, Plural

Definition: cyhoeddiad ACCAC

Last updated: 7 October 2002

Welsh: deunyddiau CAC

English: CAC material

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Context: Ystyr “deunyddiau CAC” mewn perthynas â deunyddiau lluosogi a phlanhigion ffrwythau a gynhyrchir yng Nghymru, yw deunyddiau a phlanhigion sy'n bodloni'r gofynion ar gyfer deunyddiau CAC yn Atodlen 1.

Notes: Byrfodd am "conformitas agraria communitatis" yw CAC. Dyma'r gofynion cyfreithiol Ewropeaidd ar gyfer planhigion ffrwythau.

Last updated: 5 July 2017

Welsh: Deunyddiau Cam-drin Plant yn Rhywiol

English: Child Sexual Abuse Materials

Status B

Subject: Justice and order

Part of speech: Noun, Plural

Context: Mae’r tîm yn codi ymwybyddiaeth o faterion sy’n dod i’r amlwg, sy’n cynnwys y cynnydd cyflym mewn Deunyddiau Cam-drin Plant yn Rhywiol (CSAM) a gynhyrchir gan AI drwy AI Cynhyrchiol newydd.

Last updated: 3 March 2026

Welsh: Deunyddiau Cam-drin Plant yn Rhywiol

English: CSAM

Status B

Subject: Justice and order

Part of speech: Noun, Plural

Notes: Dyma'r acronym Saesneg a ddefnyddir am Child Sexual Abuse Materials.

Last updated: 3 March 2026

Welsh: Deunyddiau Cwricwlwm Dynamo

English: Dynamo Curriculum Materials

Status C

Subject: Education

Part of speech: Noun, Plural

Last updated: 26 November 2007

Welsh: deunyddiau cyfansawdd ffeibr carbon

English: carbon fibre composites

Status A

Subject: Environment

Part of speech: Noun, Plural

Last updated: 8 December 2010

Welsh: deunyddiau dodrefnu meddal

English: soft furnishings

Status B

Subject: General

Part of speech: Noun, Plural

Context: Tecstilau nad ydynt yn ddillad gan gynnwys carpedi a theils carped, tecstilau hamdden (fel pebyll a tharpolinau), matresi, rygiau, deunyddiau dodrefnu meddal (fel llenni, cynfasau gwely, blancedi, dwfes, clustogau, tyweli), isgarped

Last updated: 10 April 2024

Welsh: deunyddiau glanhau

English: cleaning materials

Status B

Subject: Health

Part of speech: Noun, Plural

Context: Er enghraifft, y math o arwyneb y mae’r feirws arno, tymheredd a lleithder yr amgylchedd, a’r defnydd o ddeunyddiau glanhau.

Last updated: 14 May 2020

Welsh: Deunyddiau Marchnata Band Eang Cymru

English: Broadband Wales Marketing Materials

Status C

Subject: ICT

Part of speech: Noun, Plural

Definition: Teitl hypergyswllt Band Eang.

Last updated: 22 February 2006

Welsh: deunyddiau pecynwaith

English: packaging materials

Status B

Subject: Economic development

Part of speech: Noun, Plural

Definition: Y gwahanol ddeunyddiau a geir yn yr hyn a ddefnyddir ar gyfer pecynnu nwyddau at ddiben eu gwerthu neu eu cludo. Er enghraifft gellid pecynnu nwydd mewn blwch cardfwrdd â ffenestr blastig, sy'n cynnwys darnau o bolystyren, bag cotwm i ddal ategion, a gwifren. Yn yr achos hwnnw, byddai'r deunyddiau pecynwaith yn cynnwys cardfwrdd, plastig, polystyren, cotwm a metel.

Notes: Gweler hefyd y cofnod am packaging / pecynwaith.

Last updated: 22 December 2022

Welsh: Deunyddiau'r stafell ddosbarth: pennu anghenion - gwahoddiad i anfon sylwadau a syniadau

English: Classroom materials: identifying needs - invitation to send comments and ideas

Status C

Subject: Education

Part of speech: Noun, Plural

Last updated: 7 February 2008

Welsh: deunyddiau traul

English: consumables

Status B

Subject: ICT

Part of speech: Noun, Plural

Last updated: 1 June 2023

Welsh: deunyddiau traul cyfrifiaduron

English: computer consumables

Status C

Subject: ICT

Part of speech: Noun, Plural

Last updated: 1 June 2023

Welsh: deunyddiau y gellir eu hailgylchu

English: recyclables

Status C

Subject: Environment

Part of speech: Noun, Plural

Last updated: 31 March 2009

Welsh: deunydd insiwleiddio

English: insulation

Status B

Subject: Housing

Part of speech: Noun, Masculine, Singular

Plural: deunyddiau insiwleiddio

Context: Mae'r ffenestri, y drysau a deunydd inswleiddio'r atig wedi'u huwchraddio ond mae'r cartref yn dal i gael ei wresogi gan foeler nwy.

Last updated: 13 February 2025

Welsh: deunydd inswleiddio gronynnog heb ei lanw'n dynn

English: loose-fill insulation

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: such as cork granules or mineral wool

Last updated: 26 January 2009

Welsh: deunydd inswleiddio system gwres canolog

English: central heating system insulation

Status C

Subject: Housing

Part of speech: Noun, Masculine, Singular

Last updated: 11 July 2008

Welsh: deunydd lagio pibellau

English: pipe lagging

Status C

Subject: Housing

Part of speech: Noun, Masculine, Singular

Last updated: 11 July 2008

Welsh: deunydd lapio silwair

English: silage wrap

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 5 February 2004

Welsh: deunydd llawr meddal

English: soft flooring

Status C

Subject: Local government

Part of speech: Noun, Masculine, Singular

Last updated: 23 September 2005

Welsh: deunydd lled-hylifol

English: semi-liquid matter

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 17 July 2012

Welsh: deunydd llenwi

English: filler material

Status B

Subject: Housing

Part of speech: Noun, Masculine, Singular

Plural: deunyddiau llenwi

Context: Y cyngor diweddaraf yw y dylai'r deunydd llenwi mewn cladin ACM fod o fath a fyddai'n bodloni gofynion hylosgedd cyfyngedig canllawiau Rheoliadau Adeiladu cyfredol.

Last updated: 9 August 2017

Welsh: deunydd lluosogi

English: propagating material

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Plural: deunyddiau lluosogi

Context: Ystyr "deunyddiau lluosogi" yw hadau, rhannau o blanhigion a phob deunydd planhigion, gan gynnwys gwreiddgyffion, a fwriedir ar gyfer lluosogi a chynhyrchu planhigion ffrwythau.

Last updated: 5 July 2017

Welsh: deunydd lluosogi llystyfol

English: vegetative propagating material

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: deunyddiau lluosogi llystyfol

Last updated: 1 December 2022

Welsh: deunydd meddal i gryfhau glan afon

English: soft revetment

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 17 October 2005

Welsh: deunydd monolithig

English: monolithic material

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 13 May 2004

Welsh: deunydd nythu

English: nesting material

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 10 October 2007

Welsh: deunydd olrhain

English: tracer

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 22 January 2013

Welsh: deunydd organig

English: organic matter

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 2 December 2004

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