TermCymru

Results are displayed in English alphabetical order A-Z
English: stealth tax
Welsh: treth lechwraidd
Status B
Subject: Finance and statistics
Part of speech: Noun, Feminine, Singular
Plural: trethi llechwraidd
Definition: Treth a gaiff ei chodi mewn ffordd anuniongyrchol neu anamlwg. Er enghraifft gall trethdalwr gwreiddiol y dreth basio’r gost ymlaen fel elfen ychwanegol i bris gwasanaeth neu nwydd, ac ni fydd y prynwr yn sylweddoli bod elfen o dreth ynghlwm ym mhris y gwasanaeth neu nwydd. Y prynwr, felly, sy’n ysgwyddo baich y dreth yn hytrach na’r trethdalwr gwreiddiol.
Last Updated: 21 November 2022
English: steam current
Welsh: ffrwd ager
Status C
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Definition: Rhan o broses i ladd pathogenau ar blu adar.
Last Updated: 14 September 2004
English: Steam Explosion Rig
Welsh: Rig Ffrwydro Stem
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: The Steam Explosion Pilot Facility uses steam to rapidly heat biomass up to a high pressure and temperature. Under high pressure the superheated steam penetrates the fibers as a liquid. The reactor is then rapidly decompressed into a flash tank, resulting in the hot liquid water reverting to steam. It is this rapid expansion that explodes the fiber in to small particles, which then enables better access for enzymes to release fermentable sugars from the plant fiber.
Last Updated: 24 May 2013
English: steam railway
Welsh: rheilffordd stêm
Status A
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: rheilffyrdd stêm
Last Updated: 27 October 2020
English: steam room
Welsh: ystafell stêm
Status B
Subject: Tourism and leisure
Part of speech: Noun, Feminine, Singular
Plural: ystafelloedd stêm
Last Updated: 14 January 2021
English: steel and metals industry
Welsh: diwydiant dur a metel
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 11 September 2007
English: Steel and Metals Institute
Welsh: Y Sefydliad Dur a Metelau
Status A
Subject: Education
Part of speech: Noun, Masculine, Singular
Notes: Rhan o Brifysgol Abertawe
Last Updated: 4 April 2019
English: steel coil
Welsh: coil dur
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Plural: coiliau dur
Last Updated: 13 January 2026
English: steel dumping
Welsh: dympio dur
Status C
Subject: Economic development
Part of speech: Verb
Definition: In economics, "dumping" is a kind of predatory pricing, especially in the context of international trade. It occurs when manufacturers export a product to another country at a price either below the price charged in its home market or below its cost of production.
Last Updated: 15 September 2016
English: steel grey
Welsh: glas gloyw
Status A
Subject: Agriculture
Part of speech: Adjective
Definition: Horse markings
Last Updated: 29 April 2005
English: Steel Industry (Nationalisation) Bill
Welsh: Bil y Diwydiant Dur (Gwladoli)
Status B
Subject: Titles of legislation
Part of speech: Noun, Masculine, Singular
Notes: Teitl cwrteisi ar ddarn o ddeddfwriaeth ddrafft gan Lywodraeth y DU, sydd ar gael yn Saesneg yn unig. Dyma’r ffurf Saesneg ar y teitl a ymddangosodd yn Araith y Brenin, fis Mai 2026.
Last Updated: 1 July 2026
English: Steel Regeneration Package
Welsh: Pecyn Adfywio'r Diwydiant Dur
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 6 April 2005
English: Steel Research Centre
Welsh: Canolfan Ymchwil Dur
Status C
Subject: Economic development
Part of speech: Noun, Feminine, Singular
Last Updated: 19 September 2018
English: steel slab
Welsh: slab dur
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Plural: slabiau dur
Last Updated: 13 January 2026
English: Steels Training Research & Innovation Partnership
Welsh: Partneriaeth Ymchwil ac Arloesi Hyfforddiant Dur
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: STRIP. Swansea University College of Engineering.
Last Updated: 23 March 2012
English: steel tank
Welsh: tanc dur
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last Updated: 17 July 2012
English: steel undertaking
Welsh: ymgymeriad dur
Status B
Subject: Law
Part of speech: Noun, Masculine, Singular
Plural: ymgymeriadau dur
Definition: Ymgymeriad sy'n parhau unrhyw fusnes neu unrhyw fusnes sy'n cynnwys gweithgynhyrchu neu brosesu dur, neu weithgynhyrchu neu brosesu haearn i'w ddefnyddio at ddibenion gweithgynhyrchu dur yn unig, neu mewn cysylltiad â hynny.
Context: Bydd Bil y Diwydiant Dur (Gwladoli) yn caniatáu i'r Llywodraeth, pan fo'n angenrheidiol er budd y cyhoedd, gymryd camau i drosglwyddo cyfrannau a/neu eiddo ymgymeriad dur i berchnogaeth gyhoeddus.
Notes: Term sy'n codi ym Mil y Diwydiant Dur (Gwladoli) gan Lywodraeth y DU.
Last Updated: 18 June 2026
English: Steelworks Road
Welsh: Steelworks Road
Status C
Subject: Place-names
Part of speech: Proper noun
Definition: Ebbw Vale
Last Updated: 24 February 2006
English: Steep Holm
Welsh: Ynys Ronech
Status B
Subject: Place-names
Part of speech: Noun, Feminine, Singular
Definition: (neu Steepholm)
Last Updated: 22 May 2003
English: steer
Welsh: gogwydd, pwyslais, awgrym, cyngor
Status C
Subject: Social services
Part of speech: Noun, Masculine, Singular
Definition: as in 'consistent with the steer in the draft guidance'
Last Updated: 9 March 2009
English: steer
Welsh: bustach
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: 'eidion' weithiau
Last Updated: 29 July 2003
English: steering committee
Welsh: pwyllgor llywio
Status B
Subject: Committees
Part of speech: Noun, Masculine, Singular
Plural: pwyllgorau llywio
Last Updated: 26 November 2025
English: steering group
Welsh: grŵp llywio
Status A
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Last Updated: 21 December 2004
English: steering wheel lock
Welsh: clo ar gyfer yr olwyn lywio
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last Updated: 1 September 2004
English: steers
Welsh: bustych
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Last Updated: 29 July 2003
English: Steller's Sea Eagle
Welsh: Môr-eryr Steller
Status C
Subject: Birds
Part of speech: Noun, Masculine, Singular
Last Updated: 23 September 2009
English: stem
Welsh: coesyn
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last Updated: 28 September 2005
English: STEM
Welsh: STEM
Status B
Subject: Education
Part of speech: Proper noun
Definition: Science, technology, engineering and mathematics
Context: Mae’r cyhoeddiad hwn yn rhoi gwybodaeth am gamau gweithredu a chynlluniau Llywodraeth Cymru i gefnogi pynciau sy’n gysylltiedig â gwyddoniaeth, technoleg, peirianneg a mathemateg (STEM) i ddysgwyr 3–19 oed yng Nghymru.
Notes: Acronym a ddefnyddir yn helaeth yn y ddwy iaith i gyfeirio at y pynciau Gwyddoniaeth, Technoleg, Peirianneg a Mathemateg (Science, Technology, Engineering and Mathematics).
Last Updated: 7 April 2016
English: stem
Welsh: bôn
Status A
Subject: Culture and the arts
Part of speech: Noun, Masculine, Singular
Plural: bonion
Definition: Rhan greiddiol gair, yr ychwanegir rhannau eraill iddo (neu y'i haddesir) er mwyn ffurfdroi'r gair. Er enghraifft, 'cysg-' yw bôn 'cysgu', ‘cysgais’, ‘cysgwr’, 'cwsg'. Gweler hefyd 'lema'.
Last Updated: 30 January 2020
English: stem bleeding lesion
Welsh: briw diferol ar y coesyn
Status C
Subject: Plants
Part of speech: Noun, Masculine, Singular
Definition: clwy ar blanhigyn heintiedig, gyda nodd yn llifo ohono
Last Updated: 28 October 2010
English: stem cell
Welsh: bôn-gell
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Last Updated: 2 September 2004
English: stem cell transplant
Welsh: trawsblannu bôn-gelloedd
Status C
Subject: Health
Part of speech: Verb
Last Updated: 2 September 2004
English: stem lesion
Welsh: briw ar y coesyn
Status C
Subject: Plants
Part of speech: Noun, Masculine, Singular
Last Updated: 28 October 2010
English: stemmer
Welsh: boniwr
Status A
Subject: ICT
Part of speech: Noun, Masculine, Singular
Plural: bonwyr
Definition: Meddalwedd neu sgript sy’n cwtogi diwedd geiriau er mwyn datgelu bôn y gair. Er enghraifft, trosir 'cysgu', ‘cysgais’, ‘cysgwr’, 'cwsg' ac ati oll i ‘cysg-’. Gweler hefyd 'lemateiddiwr'.
Last Updated: 30 January 2020
English: STEMNET
Welsh: Rhwydwaith Gwyddoniaeth, Technoleg, Peirianneg a Mathemateg
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Definition: Science, Technology, Engineering and Mathematics Network
Last Updated: 18 May 2012
English: STEM subjects
Welsh: pynciau STEM
Status C
Subject: Education
Part of speech: Noun, Plural
Definition: STEM = science, technology, engineering and mathematics
Last Updated: 6 April 2009
English: stenotic
Welsh: stenotig
Status A
Subject: Health
Part of speech: Adjective
Last Updated: 31 October 2014
English: stent
Welsh: stent
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Context: Lluosog: stentiau.
Last Updated: 17 December 2013
English: Step by step by step: a guide to producing information for users of social and community care services
Welsh: Cam wrth gam wrth gam: canllawiau cynhyrchu gwybodaeth ar gyfer defnyddwyr gwasanaethau cymdeithasol a gofal yn y gymuned
Status C
Subject: Social services
Definition: cyhoeddwyd gan Gyngor Defnyddwyr Cymru
Last Updated: 24 September 2002
English: step change
Welsh: newid sylweddol
Status B
Subject: General
Part of speech: Noun, Masculine, Singular
Last Updated: 25 November 2004
English: step-child
Welsh: llysblentyn
Status B
Subject: Social services
Part of speech: Noun, Masculine, Singular
Plural: llysblant
Last Updated: 20 July 2026
English: step cutting
Welsh: torri step
Status C
Subject: Environment
Part of speech: Verb
Context: Tree pruning.
Last Updated: 12 August 2014
English: step-daughter
Welsh: llysferch
Status B
Subject: Social services
Part of speech: Noun, Feminine, Singular
Plural: llysferched
Last Updated: 20 July 2026
English: step-down bed
Welsh: gwely gofal llai dwys
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: gwely pan fydd y claf yn sefydlogi, ond gweler 'step-up/step-down facility'
Last Updated: 16 April 2003
English: step-down care
Welsh: gofal cam-i-lawr
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 6 May 2020
English: step-down facility
Welsh: cyfleuster cam-i-lawr
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: cyfleuster yn y gymuned - rhwng y cartref a'r ysbyty, i letya cleifion dros dro sy'n rhy dda i fod mewn ysbyty, ond sydd heb help gartref.
Last Updated: 16 April 2003
English: Step-down to Recover
Welsh: Cam i Lawr er mwyn Adfer
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 15 September 2022
English: step down to recover bedded facility
Welsh: cyfleuster â gwelyau cam i lawr er mwyn adfer
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: cyfleusterau â gwelyau cam i lawr er mwyn adfer
Last Updated: 22 September 2022
English: step-down to recover community bedded facility
Welsh: cyfleuster cymunedol â gwelyau cam i lawr er mwyn adfer
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: cyfleusterau cymunedol â gwelyau cam i lawr er mwyn adfer
Last Updated: 22 September 2022
English: Stephen’s Green
Welsh: Stephen’s Green
Status A
Subject: Place-names
Part of speech: Proper noun
Definition: Sir Benfro
Last Updated: 14 August 2003