TermCymru

Results are displayed in alphabetical order.
Welsh: polisi ymchwilio
English: investigation policy
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 22 April 2025
Welsh: polisi ymyrraeth statudol
English: statutory intervention policy
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last updated: 7 March 2008
Welsh: Polisi Ynni Adnewyddadwy Cymru Crynodeb o'r Adroddiad ar y Gweithdy Dulliau Adnewyddadwy
English: Renewable Energy Policy in Wales Renewables worshop summary
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: EDC 01-02(p5)
Last updated: 19 August 2002
Welsh: Polisi Ynni a Dur
English: Energy and Steel Policy
Status C
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last updated: 7 December 2005
Welsh: polisi ysbeilio
English: spoliation policy
Status C
Subject: Estates and Cadw
Part of speech: Noun, Masculine, Singular
Last updated: 13 March 2012
Welsh: poloniwm
English: polonium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Po
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: polyethylen
English: polyethylene
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Rhesin synthetig gwydn, ysgafn a hyblyg a wnaed drwy bolymereiddio ethylen, ac a ddefnyddir yn bennaf mewn bagiau plastig, cynwysyddion bwyd a deunydd pecynnu.
Last updated: 13 October 2022
Welsh: polyethylen dwysedd uchel
English: high-density polyethelyne
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 13 October 2022
Welsh: polyethylen dwysedd uchel
English: HDPE
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am high-density polyethelyne.
Last updated: 13 October 2022
Welsh: polyfenyg
English: polygloves
Status C
Subject: General
Part of speech: Noun, Plural
Last updated: 10 November 2008
Welsh: polygon fector
English: vector polygon
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: polygonau fector
Definition: Nodwedd ar fap digidol sy’n cynrychioli ardal (yn hytrach na phwynt neu linell).
Notes: Gweler y cofnod am vector data/data fector.
Last updated: 25 November 2022
Welsh: polygreisis
English: polycrisis
Status B
Subject: General
Part of speech: Noun, Masculine, Singular
Definition: Sefyllfa barhaus o greisis, lle ceir amryw o greisisau rhyng-gysylltiedig byd-eang.
Last updated: 7 December 2023
Welsh: polyhalid
English: polyhalite
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 28 March 2018
Welsh: polymer
English: polymer
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: polymerau
Definition: Sylwedd sydd â strwythur moleciwlaidd a adeiladwyd yn bennaf neu'n gyfan gwbl o nifer fawr o unedau tebyg wedi eu bondio, ee llawer o ddeunyddiau organig synthetig a ddefnyddir fel plastigau a rhesinau.
Last updated: 13 October 2022
Welsh: polymeras RNA sy'n seiliedig ar RNA
English: RNA dependant RNA polymerase
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: polymerasau RNA sy'n seiliedig ar RNA
Definition: Ensym sy'n gweithredu fel catalydd ar gyfer dyblygu RNA ar sail templed RNA.
Last updated: 22 July 2020
Welsh: polymerau optig
English: optical polymers
Status C
Subject: Economic development
Part of speech: Noun, Plural
Last updated: 19 December 2006
Welsh: polymer naturiol
English: natural polymer
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: polymerau naturiol
Last updated: 13 October 2022
Welsh: polymorffedd mynych
English: repeat polymorphism
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: polymorffeddau mynych
Definition: Darn o DNA sydd yn amrywio wrth ddarn cyfatebol o DNA mewn organeb arall oherwydd gwahaniaeth mewn un safle yn y dilyniant genynnol yn unig.
Context: Yr hyn sy'n nodweddu'r codio genynnol ar gyfer y derbynnydd androgen sy'n rheoli ymateb y corff i destosteron yw amryffurfedd mynych mewn menywod trawsryweddol, sy'n awgrymu ymateb annodweddiadol i'r hormon hwn.
Last updated: 27 June 2022
Welsh: polymorffedd niwcleotid sengl
English: single nucleotide polymorphism
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: polymorffeddau niwcleotid sengl
Definition: Darn o DNA sydd yn amrywio wrth ddarn cyfatebol o DNA mewn organeb arall oherwydd gwahaniaeth mewn un safle yn y dilyniant genynnol yn unig.
Last updated: 30 June 2022
Welsh: Polynesaidd
English: Polynesian
Status C
Subject: Personnel
Part of speech: Adjective
Last updated: 22 June 2007
Welsh: Polynesia Ffrengig
English: French Polynesia
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
Welsh: polyniwropathi salwch critigol
English: critical illness polyneuropathy
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Syndrom sy'n peri gwendid difrifol yn y cyhyrau mewn cleifion sy'n dioddef salwch critigol (salwch sy'n peryglu bywyd).
Notes: Mae critical illness myopathy / myopathi gofal critigol yn syndrom tebyg iawn.
Last updated: 25 June 2020
Welsh: polyn pysgota
English: pole line
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: polion pysgota
Last updated: 26 March 2020
Welsh: polypau
English: polyps
Status C
Subject: Health
Part of speech: Noun, Plural
Definition: small growths
Last updated: 7 May 2009
Welsh: polysorbad
English: polysorbate
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: polysorbadau
Last updated: 6 November 2019
Welsh: polystyren
English: polystyrene
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 13 October 2022
Welsh: polystyren allwthiedig
English: extruded polystyrene
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Polystyren a ffurfiwyd drwy wthio'r deunydd crai tawdd drwy dwll o siâp penodol er mwyn creu cynnyrch ar y siâp hwnnw.
Last updated: 13 October 2022
Welsh: polystyren allwthiedig
English: XPS
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Polystyren a ffurfiwyd drwy wthio'r deunydd crai tawdd drwy dwll o siâp penodol er mwyn creu cynnyrch ar y siâp hwnnw.
Notes: Dyma'r acronym Saesneg a ddefnyddir am extruded polystyrene.
Last updated: 13 October 2022
Welsh: polystyren ymestynedig
English: expanded polystyrene
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Polystyren a ffurfiwyd drwy chwythu nwy i mewn i belenni o bolystyren crai, sy'n ehangu'r deunydd hwnnw.
Last updated: 13 October 2022
Welsh: polystyren ymestynedig
English: EPS
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Polystyren a ffurfiwyd drwy chwythu nwy i mewn i belenni o bolystyren crai, sy'n ehangu'r deunydd hwnnw.
Notes: Dyma'r acronym Saesneg a ddefnyddir am expanded polystyrene.
Last updated: 13 October 2022
Welsh: Pombren Ffeirad
English: Parson's Bridge
Status C
Subject: Place-names
Part of speech: Noun, Feminine, Singular
Definition: Yng Ngheredigion.
Last updated: 14 September 2004
Welsh: POM-V
English: POM-V
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Definition: Meddyginiaethau ar bresgripsiwn na chaiff neb ond milfeddygon eu rhagnodi
Last updated: 28 March 2018
Welsh: POM VPS
English: POM VPS
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Definition: Meddyginiaethau ar bresgripsiwn y caiff milfeddyg, fferyllydd neu berson â'r cymwysterau priodol eu rhagnodi
Last updated: 28 March 2018
Welsh: Ponciau
English: Ponicau
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Wrecsam. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Wrecsam (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: PONT
English: PONT
Status A
Subject: Community development
Part of speech: Proper noun, Feminine, Singular
Definition: Partnerships Overseas Networking Trust
Last updated: 22 September 2006
Welsh: PONT
English: PONT
Status A
Subject: Environment
Definition: Grazing, Nature, and Heritage (Welsh acronym)
Last updated: 3 October 2005
Welsh: pont
English: bridge
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Plural: pontydd
Notes: Ym maes deintyddiaeth.
Last updated: 2 April 2020
Welsh: Pontardawe
English: Pontardawe
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Castell-nedd Port Talbot. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Castell-nedd Port Talbot (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: Pontarddulais
English: Pontarddulais
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Ninas a Sir Abertawe. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Dinas a Sir Abertawe (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: Pont ar Ddyfi
English: Dyfi Bridge
Status B
Subject: Place-names
Part of speech: Noun, Feminine, Singular
Notes: Weithiau defnyddir Pont-ar-Ddyfi neu Dovey Bridge mewn testunau Saesneg, ond Pont ar Ddyfi ddylid ei ddefnyddio yn Gymraeg, am y bont ei hun ac am yr ardal ehangach a enwyd ar ôl y bont.
Last updated: 13 February 2017
Welsh: Pontarfynach
English: Devil’s Bridge
Status A
Subject: Place-names
Part of speech: Proper noun
Definition: Ceredigion
Last updated: 14 August 2003
Welsh: pont (ategweithiau yn ymwthio allan ond heb leihau ardal/lled y llif)
English: bridge (abutments protruding but not reducing flow area/width)
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last updated: 28 February 2012
Welsh: Pont at Waith
English: Bridge to Employment
Status C
Subject: Personnel
Part of speech: Noun, Feminine, Singular
Context: Yng nghyd-destun yr Hyfforddeiaethau newydd.
Last updated: 17 November 2011
Welsh: pont bwa-a-thannau
English: bowstring arch bridge
Status C
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last updated: 2 December 2004
Welsh: pont bwyso
English: weighbridge
Status A
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: pontydd pwyso
Notes: Term o Fil Treth Gwarediadau Tirlenwi (Cymru) yw hwn.
Last updated: 15 August 2016
Welsh: Pont Canaston
English: Canaston Bridge
Status C
Subject: Place-names
Part of speech: Proper noun
Definition: Pembrokeshire
Last updated: 6 May 2005
Welsh: pont droed
English: footbridge
Status C
Subject: Law
Part of speech: Noun, Feminine, Singular
Last updated: 27 October 2006
Welsh: pont droi
English: swing bridge
Status C
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last updated: 20 November 2007
Welsh: Pont Fadlen
English: Merlin’s Bridge
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Sir Benfro. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Sir Benfro (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: pont fwa
English: arch bridge
Status C
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last updated: 4 January 2005