TermCymru

Results are displayed in English alphabetical order A-Z

Welsh: sylwedd y gyfundrefn drosiannol

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: sylweddau'r gyfundrefn drosiannol

Notes: Categori o sylweddau a reolir o dan y Rheoliadau REACH. Mae'n bosibl y byddai "un o sylweddau'r gyfundrefn drosiannol" yn gweithio'n well mewn rhai cyd-destunau lle mae angen y ffurf unigol.

Last Updated: 1 July 2021

English: phase of alert

Welsh: lefel y rhybudd

Status C

Subject: Health

Part of speech: Noun, Feminine, Singular

Context: yng nghyd-destun y ffliw moch

Last Updated: 29 January 2010

English: phasing

Welsh: codi'r rhent yn raddol

Status C

Subject: Housing

Part of speech: Verb

Context: Only in the context of Rent Officers' work.

Last Updated: 26 May 2010

English: phasing policy

Welsh: polisi fesul cyfnod

Status C

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last Updated: 23 July 2003

English: PhD Supervisor

Welsh: Goruchwyliwr Doethuriaeth

Status C

Subject: Education

Part of speech: Noun, Masculine, Singular

Plural: Goruchwylwyr Doethuriaeth

Last Updated: 10 December 2020

English: PHEIC

Welsh: Argyfwng Iechyd Cyhoeddus o Bryder Rhyngwladol

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Categori a roddir sefyllfa gan Sefydliad Iechyd y Byd o dan y Rheoliadau Iechyd Rhyngwladol, gyda'r bwriad o gydlynu ymdrechion i atal clefyd trosglwyddadwy rhag lledu'n fyd eang.

Notes: Dyma'r acronym Saesneg am Public Health Emergency of International Concern

Last Updated: 26 March 2020

English: phenotype

Welsh: ffenoteip

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 20 October 2008

English: phenotyping

Welsh: ffenodeipio

Status C

Subject: Agriculture

Part of speech: Verb

Last Updated: 12 August 2021

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

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