TermCymru

Results are displayed in English alphabetical order A-Z
English: PHEV
Welsh: cerbyd trydan hybrid plygio i mewn
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: cerbydau trydan hybrid plygio i mewn
Definition: Cerbyd sy’n cyfuno injan danwydd â modur trydan, ac y gellir ei ailwefru drwy blygio i mewn i ffynhonnell drydanol.
Notes: Dyma’r acronym Saesneg a ddefnyddir am plug-in hybrid electric vehicle.
Last Updated: 16 October 2025
English: PHHPD
Welsh: AICPI
Status C
Subject: Welsh Government posts and departments
Definition: Public Health and Health Professions Department
Last Updated: 16 January 2007
English: PHI
Welsh: yswiriant iechyd parhaol
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: permanent health insurance
Last Updated: 26 August 2008
English: PHIA
Welsh: Pennaeth y Proffesiwn Asesu Cuddwybodaeth
Status B
Subject: Justice and order
Part of speech: Noun, Masculine, Singular
Last Updated: 2 July 2020
English: philanthropic
Welsh: haelionus
Status C
Subject: Culture and the arts
Part of speech: Adjective
Last Updated: 25 May 2012
English: philanthropy
Welsh: dyngarwch
Status B
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Definition: Yr arfer o gyfrannu’n hael at elusennau er llesâd pobl.
Last Updated: 8 June 2023
English: Philippines
Welsh: Ynysoedd Philippines
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: Philosophy for Children
Welsh: Athroniaeth ar gyfer Plant
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: P4C
Last Updated: 3 September 2008
English: PHIP
Welsh: Rhaglen Sefydlu Broffesiynol i Benaethiaid
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: Professional Headship Induction Programme
Last Updated: 3 November 2003
English: PHIRN
Welsh: Rhwydwaith Ymchwil Gwella Iechyd y Cyhoedd
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Public Health Improvement Research Network
Last Updated: 2 July 2008
English: phishing
Welsh: gwe-rwydo
Status A
Subject: ICT
Part of speech: Verb
Definition: Anfon negeseuon electronig er mwyn ceisio casglu gwybodaeth bersonol (fel enw defnyddiwr a chyfrinair) drwy esgus cynrychioli unigolyn neu gorff yr ymddiriedir ynddynt, er enghraifft banc.
Notes: Safonwyd y term hwn ar sail y canllawiau ar drosi termau slangaidd Saesneg. Gweler yr erthygl yn yr Arddulliadur.
Last Updated: 7 May 2025
English: phlebotomist
Welsh: gwaedydd
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 5 September 2003
English: phlegm
Welsh: fflem
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Last Updated: 1 December 2008
English: PHLS
Welsh: Gwasanaeth Labordai Iechyd y Cyhoedd
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Public Health Laboratory Service
Last Updated: 25 June 2008
English: phobia
Welsh: ffobia
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 21 April 2008
English: phoenix company
Welsh: cwmni ffenics
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Plural: cwmnïau ffenics
Definition: Busnes sy'n deillio o gwymp cwmni blaenorol, fel arfer oherwydd ansolfedd.
Last Updated: 23 October 2025
English: phone dialer
Welsh: deialydd ffôn
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last Updated: 19 July 2005
English: phoneme
Welsh: ffonem
Status B
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Plural: ffonemau
Definition: Uned sain mewn iaith benodol, na ellir ei dadansoddi i unedau llai. Gall wahaniaethu un gair wrth air arall yr yr iaith honno.
Notes: Term o faes ieithyddiaeth a ddefnyddir mewn deunyddiau sy’n gysylltiedig â CEFR, y Fframwaith Cyfeirio Cyffredin Ewropeaidd ar gyfer Ieithoedd.
Last Updated: 2 October 2025
English: phonemic
Welsh: ffonemig
Status B
Subject: Education
Part of speech: Adjective
Last Updated: 23 November 2023
English: phonetic
Welsh: seinegol
Status B
Subject: Culture and the arts
Part of speech: Adjective
Definition: Yn disgrifio sut mae seiniau yn cael eu cynhyrchu.
Notes: Term o faes ieithyddiaeth a ddefnyddir mewn deunyddiau sy’n gysylltiedig â CEFR, y Fframwaith Cyfeirio Cyffredin Ewropeaidd ar gyfer Ieithoedd.
Last Updated: 2 October 2025
English: phonics
Welsh: ffoneg
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Dull o ddysgu sgiliau darllen ac ysgrifennu trwy ddangos y berthynas rhwng synau'r iaith lafar a llythrennau neu gyfuniadau o lythrennau'r iaith ysgrifenedig.
Last Updated: 23 November 2023
English: phonological
Welsh: ffonolegol
Status B
Subject: Culture and the arts
Part of speech: Adjective
Definition: Yn diffinio system seiniau iaith.
Notes: Term o faes ieithyddiaeth a ddefnyddir mewn deunyddiau sy’n gysylltiedig â CEFR, y Fframwaith Cyfeirio Cyffredin Ewropeaidd ar gyfer Ieithoedd.
Last Updated: 2 October 2025
English: phonology
Welsh: ffonoleg
Status B
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: Gwyddor neu athrawiaeth y synau sylfaenol a wneir gan berson wrth lefaru.
Last Updated: 13 March 2024
English: phosphate
Welsh: ffosffad
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 17 October 2005
English: phosphodiesterase inhibitor
Welsh: atalydd ffosffodiesteras
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: atalyddion ffosffodiesteras
Last Updated: 6 November 2019
English: phosphorous
Welsh: ffosfforws
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 11 July 2019
English: phosphorus
Welsh: ffosfforws
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: P
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last Updated: 18 June 2025
English: phosporous loading mitigation
Welsh: lliniaru ar y llwyth ffosfforws
Status B
Subject: Environment
Part of speech: Verb
Context: Gan adeiladu ar wybodaeth a thystiolaeth sy’n bodoli eisoes, byddwn yn datblygu dull rheoleiddio i alluogi atebion sy'n seiliedig ar natur o fewn dalgylchoedd i liniaru ar y llwyth ffosfforws ac i leihau'r effaith ar yr amgylchedd.
Last Updated: 28 July 2022
English: photocard licence
Welsh: trwydded cerdyn-llun
Status C
Subject: Personnel
Part of speech: Noun, Feminine, Singular
Last Updated: 13 June 2011
English: photocatalytic oxidation
Welsh: ocsideiddio ffotogatalytig
Status B
Subject: Environment
Part of speech: Verb
Last Updated: 4 February 2021
English: photography
Welsh: ffotograffiaeth
Status A
Subject: General
Part of speech: Noun, Feminine, Singular
Last Updated: 14 November 2007
English: photography and photographic processing
Welsh: ffotograffiaeth a phrosesu ffotograffig
Status C
Subject: General
Last Updated: 11 September 2007
English: photo imaging
Welsh: ffoto-ddelweddu
Status C
Subject: ICT
Part of speech: Verb
Last Updated: 9 October 2007
English: Photo Imaging for Staff Photographers
Welsh: Ffoto-ddelweddu ar gyfer Ffotograffwyr Staff
Status A
Subject: Education
Part of speech: Verb
Context: Apprenticeship learning pathway.
Last Updated: 31 October 2012
English: photoluminescence
Welsh: ffoto-ymoleuedd
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: Luminescence caused by visible light or by infrared or ultraviolet radiation.
Last Updated: 16 March 2017
English: photoluminescent
Welsh: ffoto-ymoleuol
Status B
Subject: Economic development
Part of speech: Adjective
Last Updated: 16 March 2017
English: photomontage
Welsh: ffotogyfosodiad
Status A
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Last Updated: 29 April 2014
English: Photonics Academy
Welsh: Academi Ffotoneg
Status A
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last Updated: 10 March 2008
English: photo pass
Welsh: pàs â llun
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last Updated: 29 April 2003
English: photostream
Welsh: cyfres luniau
Status C
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last Updated: 22 December 2010
English: photosynthetically active radiation
Welsh: ymbelydredd gweithredol ffotosynthetig
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 12 August 2021
English: phototherapy
Welsh: ffototherapi
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 13 December 2010
English: photovoltaic
Welsh: ffotofoltaidd
Status B
Subject: Environment
Part of speech: Adjective
Last Updated: 24 September 2025
English: photovoltaic
Welsh: ffotofoltegyn
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: ffotofoltegion
Definition: Dyfais ffotofoltaidd, yn enwedig cell solar.
Notes: Yn y lluosog y gwelir y term hwn gan amlaf. Byddai 'dyfais ffotofoltaidd' yn gallu bod yn addas hefyd.
Last Updated: 16 November 2023
English: PHPBs
Welsh: Byrddau Partneriaeth Iechyd mewn Carchardai
Status C
Subject: Justice and order
Part of speech: Noun, Plural
Definition: Prison Health Partnership Boards
Last Updated: 26 April 2010
English: PHR
Welsh: Y Rheoliadau Iechyd Planhigion
Status A
Subject: Law
Part of speech: Noun, Plural
Notes: Dyma'r acronym Saesneg a ddefnyddir am Plant Health Regulations.
Last Updated: 4 July 2023
English: PHSI
Welsh: Arolygiaeth Iechyd Planhigion a Hadau
Status C
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Context: Plant Health and Seeds Inspectorate
Last Updated: 6 November 2009
English: phthalate
Welsh: ffthalad
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: ffthaladau
Notes: Gan amlaf, ni seinir yr ff- gychwynnol wrth ynganu’r gair.
Last Updated: 1 September 2022
English: PHW
Welsh: Iechyd Cyhoeddus Cymru
Status C
Subject: Health
Context: Public Health Wales
Last Updated: 28 January 2010
English: phylodynamic models
Welsh: model phyloddynamig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: modelau phyloddynamig
Last Updated: 16 July 2020