TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: Peryglon Difrifol o ran Trallwyso
English: SHOT
Status B
Subject: Health
Part of speech: Noun, Plural
Definition: Digwyddiadau neu adweithiau niweidiol sy’n gysylltiedig â thrallwyso cydrannau gwaed neu imiwnoglobwlin Gwrth-D, a all arwain at niwed gwirioneddol i’r claf, niwed posibl (camgymeriadau neu fethiannau a allai fod wedi achosi niwed), neu faterion systemig yn ymwneud ag arferion trallwyso.
Notes: Dyma’r acronym Saesneg a ddefnyddir am Serious Hazards of Transfusion.
Last updated: 2 October 2025
Welsh: perygl tân
English: fire hazard
Status C
Subject: Fire and rescue
Part of speech: Noun, Masculine, Singular
Plural: peryglon tân
Last updated: 7 January 2025
Welsh: peryglu bywyd
English: endangering life
Status B
Subject: Law
Part of speech: Verb
Notes: Teitl ar drosedd
Last updated: 27 November 2025
Welsh: peryglus
English: hazardous
Status C
Subject: Environment
Part of speech: Adjective
Last updated: 25 March 2004
Welsh: pŵer ymchwilio
English: investigatory power
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Plural: pwerau ymchwilio
Notes: Term o Fil Treth Gwarediadau Tirlenwi (Cymru) yw hwn.
Last updated: 15 August 2016
Welsh: pŵer ymhlyg
English: implied power
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Last updated: 7 May 2013
Welsh: pesari iro
English: lubricating pessary
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: pesarïau iro
Last updated: 6 November 2019
Welsh: pesgi
English: fatten
Status C
Subject: Agriculture
Part of speech: Verb
Definition: Cadw anifeiliaid i'w gwneud yn dew cyn eu lladd ar gyfer eu bwyta.
Last updated: 29 July 2003
Welsh: pesgi
English: finishing
Status B
Subject: Agriculture
Part of speech: Verb
Definition: Dau ystyr: anfon anifeiliaid stôr i'w pesgi neu ran olaf dwysach y broses o besgi.
Last updated: 29 July 2003
Welsh: pesgwr
English: finisher
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Defnyddir "gorffennwr" hefyd.
Last updated: 27 January 2010
Welsh: peste des petits ruminants
English: peste des petits ruminants
Status C
Subject: Agriculture
Definition: Dyma’r enw sy’n cael ei arfer amlaf yn Saesneg.
Context: Disease also known as "goat plague".
Last updated: 31 March 2009
Welsh: peswch
English: cough
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r enw ar y cyflwr iechyd ei hun.
Last updated: 26 March 2020
Welsh: peswch
English: cough
Status A
Subject: Health
Part of speech: Verb
Notes: Y weithred o besychu.
Last updated: 26 March 2020
Welsh: peswch cyson
English: continuous cough
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 16 April 2020
Welsh: peswch parhaus
English: persistent cough
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Tri phwl o beswch mewn 24 awr, neu bwl o beswch sy'n para am awr.
Last updated: 16 April 2020
Welsh: pesychiad
English: cough
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: pesychiadau
Notes: Dyma'r enw ar un enghraifft o'r weithred o beswch.
Last updated: 26 March 2020
Welsh: pethau plant
English: kids' stuff
Status C
Subject: Food
Part of speech: Noun, Plural
Context: Yng nghyd-destun y cynllun Newid am Oes yn unig.
Last updated: 6 December 2010
Welsh: pethau ymolchi
English: toiletries
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 28 February 2005
Welsh: Peth Rhy Ddifrifol: Adolygiad o'r Mesurau i Amddiffyn Plant a Phobl Ifanc sy'n cael Triniaeth a Gofal gan yr NHS yng Nghymru
English: Too Serious a Thing: The Review of Safeguards for Children and Young People Treated and Cared for by the NHS in Wales
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: National Assembly document
Last updated: 14 April 2004
Welsh: petrisen
English: partridge
Status A
Subject: Birds
Part of speech: Noun, Feminine, Singular
Plural: petris
Definition: Petrix petrix
Last updated: 12 June 2025
Welsh: petrocemegol
English: petrochemical
Status A
Subject: Economic development
Part of speech: Adjective
Last updated: 4 October 2005
Welsh: petroliwm hylifol crai
English: crude liquid petroleum
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 23 March 2023
Welsh: petruso
English: hesitation
Status C
Subject: Education
Part of speech: Verb
Definition: A halting or faltering in speech.
Context: Atal dweud (a elwir hefyd yn siarad ag atal neu ddiffyg rhuglder) – lleferydd a nodweddir gan lawer o ailadrodd neu estyn synau, sillafau neu eiriau, neu gan lawer o betruso neu oedi sy'n tarfu ar lif rhythmig y lleferydd. Dim ond os yw'n ddigon difrifol i darfu'n sylweddol ar ruglder y lleferydd y dylid ei gategoreiddio’n anhwylder.
Last updated: 8 February 2016
Welsh: petruster brechu
English: vaccine hesitancy
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Oedi cyn derbyn, neu wrthod derbyn, brechlyn er bod gwasanaethau brechu ar gael.
Last updated: 17 December 2020
Welsh: peuoedd
English: domains
Status C
Subject: Culture and the arts
Part of speech: Noun, Plural
Definition: Ardaloedd a ddiffinnir yn ieithyddol.
Context: Linguistically defined areas.
Last updated: 27 October 2005
Welsh: PFHxS
English: PFHxS
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Notes: Dyma’r symbol a ddefnyddir yn y ddwy iaith am y llygrydd organig parhaus, perfluorohexane sulfonic acid / asid perfflworohecsan sylffonig.
Last updated: 18 September 2024
Welsh: PFOA
English: PFOA
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Notes: Dyma’r symbol a ddefnyddir yn y ddwy iaith am y llygrydd organig parhaus, perfluorooctanoic acid / asid perfflworooctanoig.
Last updated: 18 September 2024
Welsh: pH
English: pH
Status A
Subject: Environment
Part of speech: Neutral
Last updated: 11 July 2019
Welsh: phacelia
English: phacelia
Status C
Subject: Plants
Definition: Phacelia tanacetifolia.
Last updated: 29 July 2003
Welsh: PHCM
English: FRCN
Status C
Subject: Environment
Definition: Fisheries, Recreation, Conservation and Navigation
Last updated: 29 September 2005
Welsh: "phersonau achrededig"
English: accredited persons
Status C
Subject: Justice and order
Part of speech: Noun, Plural
Last updated: 3 November 2011
Welsh: phyloddynameg
English: phylodynamics
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Maes sy'n gyfuniad o imiwnoddeinameg, epidemioleg a bioleg esblygiad er mwyn deall sut y mae clefydau heintus yn cael eu trosglwyddo ac yn esblygu.
Last updated: 16 July 2020
Welsh: piano jazz
English: jazz piano
Status C
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Last updated: 6 August 2008
Welsh: pibell anhydraidd sydd wedi ei selio
English: sealed impermeable pipe
Status B
Subject: Planning
Part of speech: Noun, Feminine, Singular
Plural: pibellau anhydraidd sydd wedi eu selio
Last updated: 1 October 2020
Welsh: pibellau dŵr
English: downpipes
Status C
Subject: Housing
Part of speech: Noun, Plural
Last updated: 11 July 2008
Welsh: pibellau ffliw
English: flu-pipes
Status C
Subject: Housing
Part of speech: Noun, Plural
Last updated: 11 July 2008
Welsh: pibellau gollwng
English: outfall pipes
Status C
Subject: Law
Part of speech: Noun, Plural
Last updated: 30 March 2005
Welsh: pibellau'n croesi (o dan y gwely)
English: pipe crossing (below bed)
Status B
Subject: Environment
Part of speech: Noun, Feminine, Plural
Last updated: 28 February 2012
Welsh: pibellau'n croesi (uwchlaw'r glannau)
English: pipe crossing (above bank)
Status B
Subject: Environment
Part of speech: Noun, Feminine, Plural
Last updated: 28 February 2012
Welsh: pibellau yn croesi (yn y sianel)
English: pipe crossing (in channel)
Status B
Subject: Environment
Part of speech: Noun, Feminine, Plural
Last updated: 28 February 2012
Welsh: pibell awyr
English: vent pipe
Status C
Subject: Housing
Part of speech: Noun, Feminine, Singular
Last updated: 12 August 2014
Welsh: pibell blastig dwbl
English: twin-walled plastic pipe
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: In a plumbing system.
Last updated: 16 January 2013
Welsh: pibell garthion
English: soil pipe
Status C
Subject: Housing
Part of speech: Noun, Feminine, Singular
Last updated: 12 August 2014
Welsh: pibell gastroberfeddol isaf
English: lower gastrointestinal tract
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Last updated: 11 March 2021
Welsh: pibell gastroberfeddol uchaf
English: upper gastrointestinal tract
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 11 March 2021
Welsh: pibell godi sych
English: dry riser
Status B
Subject: Fire and rescue
Part of speech: Noun, Feminine, Singular
Plural: pibellau codi sych
Definition: Pibell a gaiff ei chynnwys yn rhan o adeiladwaith adeilad uchel, o’r llawr daear i’r llawr uchaf, ac y gellir cysylltu pibell ddŵr diffodd tân iddi. Mae darpariaeth o’r fath yn golygu nad oes angen i ddiffoddwyr tân gludo pibellau dŵr hir i fyny grisiau mewnol yr adeilad mewn achos o dân.
Last updated: 29 June 2023
Welsh: pibell hyblyg
English: flexible pipe
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: pibellau hyblyg
Notes: Yng nghyd-destun storio olew.
Last updated: 13 January 2016
Welsh: pibell mewnlif
English: intake pipe
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: pibellau mewnlif
Notes: Yng nghyd-destun systemau oeri gorsafoedd ynni â dŵr.
Last updated: 23 March 2021
Welsh: pibell refrol
English: anal canal
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Last updated: 3 March 2006
Welsh: pibell sych ar gyfer dyfrgwn
English: dry otter pipe
Status C
Subject: Law
Part of speech: Noun, Feminine, Singular
Last updated: 17 January 2005