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English: low-cost airline

Welsh: cwmni hedfan rhad

Status B

Subject: Tourism and leisure

Part of speech: Noun, Masculine, Singular

Last Updated: 29 March 2006

English: low-cost airline

Welsh: cwmni hedfan rhad

Status B

Subject: Tourism and leisure

Part of speech: Noun, Masculine, Singular

Last Updated: 29 March 2006

English: Low Cost Home Ownership

Welsh: Perchentyaeth Cost Isel

Status C

Subject: Housing

Part of speech: Noun, Masculine, Singular

Definition: LCHO

Last Updated: 24 November 2003

English: Low Cost Home Ownership

Welsh: Perchentyaeth Cost Isel

Status C

Subject: Housing

Part of speech: Noun, Masculine, Singular

Definition: LCHO

Last Updated: 24 November 2003

English: low cost market housing

Welsh: tai rhad ar y farchnad agored

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 29 January 2004

English: low cost market housing

Welsh: tai rhad ar y farchnad agored

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 29 January 2004

English: Low Demand Housing

Welsh: Tai â Galw Isel

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 3 July 2002

English: Low Demand Housing

Welsh: Tai â Galw Isel

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 3 July 2002

English: low dose brachytherapy

Welsh: bracitherapi dos isel

Status C

Subject: Health

Last Updated: 4 April 2007

English: low dose brachytherapy

Welsh: bracitherapi dos isel

Status C

Subject: Health

Last Updated: 4 April 2007

English: low dose diphtheria

Welsh: difftheria dos isel

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 15 August 2011

English: low dose diphtheria

Welsh: difftheria dos isel

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 15 August 2011

English: Low Earth Orbit

Welsh: Orbit Isel

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Definition: Orbit o amgylch y ddaear ar uchder rhwng 160km a 1000km. Fe'i defnyddir gan fwyaf gan loerennau cyfathrebu a delweddu.

Notes: Pe ffefrid defnyddio ymadrodd mwy disgrifiadol, gellid defnyddio 'orbit isel o amgylch y ddaear'.

Last Updated: 25 March 2026

English: Low Earth Orbit

Welsh: Orbit Isel

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Definition: Orbit o amgylch y ddaear ar uchder rhwng 160km a 1000km. Fe'i defnyddir gan fwyaf gan loerennau cyfathrebu a delweddu.

Notes: Pe ffefrid defnyddio ymadrodd mwy disgrifiadol, gellid defnyddio 'orbit isel o amgylch y ddaear'.

Last Updated: 25 March 2026

English: low educational achievement

Welsh: cyflawniad addysgol isel

Status B

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 18 January 2008

English: low educational achievement

Welsh: cyflawniad addysgol isel

Status B

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 18 January 2008

English: low educational attainment

Welsh: cyrhaeddiad isel mewn addysg

Status C

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 27 June 2002

English: low educational attainment

Welsh: cyrhaeddiad isel mewn addysg

Status C

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 27 June 2002

English: low emissions scenario

Welsh: senario allyriadau isel

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last Updated: 3 August 2010

English: low emissions scenario

Welsh: senario allyriadau isel

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last Updated: 3 August 2010

English: Low Emission Zone

Welsh: Parth Allyriadau Isel

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Plural: Parthau Allyriadau Isel

Definition: Ardal lle cymerir camau penodol i wella ansawdd yr aer drwy godi tâl ar gerbydau sy'n allyrru lefel benodol o lygryddion o'u hegsôst.

Notes: Defnyddir yr acronym LEZ yn Saesneg am y term hwn.

Last Updated: 16 September 2024

English: Low Emission Zone

Welsh: Parth Allyriadau Isel

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Plural: Parthau Allyriadau Isel

Definition: Ardal lle cymerir camau penodol i wella ansawdd yr aer drwy godi tâl ar gerbydau sy'n allyrru lefel benodol o lygryddion o'u hegsôst.

Notes: Defnyddir yr acronym LEZ yn Saesneg am y term hwn.

Last Updated: 16 September 2024

English: low energy

Welsh: rhad-ar-ynni

Status C

Subject: Environment

Part of speech: Adjective

Definition: eg low energy lamps

Last Updated: 8 December 2004

English: low energy

Welsh: rhad-ar-ynni

Status C

Subject: Environment

Part of speech: Adjective

Definition: eg low energy lamps

Last Updated: 8 December 2004

English: low energy bulb

Welsh: bwlb rhad-ar-ynni

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last Updated: 27 March 2007

English: low energy bulb

Welsh: bwlb rhad-ar-ynni

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last Updated: 27 March 2007

English: low energy circalittoral rock

Welsh: craig isforlan ddofn egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Circalittoral rock is present all around the coast of the United Kingdom, and is characterised by animal dominated communities (a departure from the algae dominated communities in the infralittoral zone). This habitat complex occurs on wave-sheltered circalittoral bedrock and boulders subject to mainly weak/very weak tidal streams.

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. CR.LCR yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy deeper water rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy circalittoral rock

Welsh: craig isforlan ddofn egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Circalittoral rock is present all around the coast of the United Kingdom, and is characterised by animal dominated communities (a departure from the algae dominated communities in the infralittoral zone). This habitat complex occurs on wave-sheltered circalittoral bedrock and boulders subject to mainly weak/very weak tidal streams.

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. CR.LCR yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy deeper water rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy deeper water rock

Welsh: craig ddŵr dwfn egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low Energy circalittoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: low energy deeper water rock

Welsh: craig ddŵr dwfn egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low Energy circalittoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: Low Energy Housing and Sustainable Warmth

Welsh: Tai Ynni Isel a Chynhesrwydd Cynaliadwy

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 24 September 2002

English: Low Energy Housing and Sustainable Warmth

Welsh: Tai Ynni Isel a Chynhesrwydd Cynaliadwy

Status C

Subject: Housing

Part of speech: Noun, Plural

Last Updated: 24 September 2002

English: low energy infralittoral rock

Welsh: craig isforlan fas egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Infralittoral rock includes habitats of bedrock, boulders and cobbles which occur in the shallow subtidal zone and typically support seaweed communities. The upper limit is marked by the top of the kelp zone whilst the lower limit is marked by the lower limit of kelp growth or the lower limit of dense seaweed growth. Infralittoral rock in wave and tide-sheltered conditions, supporting silty communities with Laminaria hyperborea and/or Laminaria saccharina (K).

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. IR.LIR. yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy shallow water rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy infralittoral rock

Welsh: craig isforlan fas egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Infralittoral rock includes habitats of bedrock, boulders and cobbles which occur in the shallow subtidal zone and typically support seaweed communities. The upper limit is marked by the top of the kelp zone whilst the lower limit is marked by the lower limit of kelp growth or the lower limit of dense seaweed growth. Infralittoral rock in wave and tide-sheltered conditions, supporting silty communities with Laminaria hyperborea and/or Laminaria saccharina (K).

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. IR.LIR. yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy shallow water rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy intertidal rock

Welsh: craig rynglanw egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low energy littoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: low energy intertidal rock

Welsh: craig rynglanw egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low energy littoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: low energy littoral rock

Welsh: craig forlannol egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Littoral rock includes habitats of bedrock, boulders and cobbles which occur in the intertidal zone (the area of the shore between high and low tides) and the splash zone. Sheltered to extremely sheltered rocky shores with very weak to weak tidal streams are typically characterised by a dense cover of fucoid seaweeds which form distinct zones (the wrack Pelvetia canaliculata on the upper shore through to the wrack Fucus serratus on the lower shore).

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. LR.LLR yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy intertidal rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy littoral rock

Welsh: craig forlannol egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Littoral rock includes habitats of bedrock, boulders and cobbles which occur in the intertidal zone (the area of the shore between high and low tides) and the splash zone. Sheltered to extremely sheltered rocky shores with very weak to weak tidal streams are typically characterised by a dense cover of fucoid seaweeds which form distinct zones (the wrack Pelvetia canaliculata on the upper shore through to the wrack Fucus serratus on the lower shore).

Notes: Term o system ddosbarthu EUNIS o gynefinoedd morol. LR.LLR yw’r Cod Cynefin. Mae’r Cyd-bwyllgor Cadwraeth Natur yn defnyddio system arall o gategoreiddio cynefinoedd morol, yn seiliedig ar system ddosbarthu EUNIS. Yn y drefn honno “low energy intertidal rock” yw’r term cyfatebol.

Last Updated: 12 October 2016

English: low energy shallow water rock

Welsh: craig fasddwr egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low energy infralittoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: low energy shallow water rock

Welsh: craig fasddwr egni isel

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Notes: Dyma derm y Cyd-bwyllgor Cadwraeth Natur ar gyfer y biotop hwn, sy’n seiliedig ar system ddosbarthu EUNIS o gynefinoedd morol. Yn system ddosbarthu EUNIS, “low energy infralittoral rock” yw’r term cyfatebol. Gweler y cofnod am y term hwnnw am fwy o wybodaeth, gan gynnwys diffiniad.

Last Updated: 12 October 2016

English: Lower

Welsh: Gwaelod

Status C

Subject: Place-names

Part of speech: Noun, Masculine, Singular

Definition: wrth sôn am gwm, e.e.Gwaelod Cwm Tawe

Context: In place-names.

Last Updated: 8 November 2004

English: Lower

Welsh: Gwaelod

Status C

Subject: Place-names

Part of speech: Noun, Masculine, Singular

Definition: wrth sôn am gwm, e.e.Gwaelod Cwm Tawe

Context: In place-names.

Last Updated: 8 November 2004

English: lower age limits

Welsh: terfyn oedran is

Status B

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 14 February 2012

English: lower age limits

Welsh: terfyn oedran is

Status B

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 14 February 2012

English: lower assessment threshold

Welsh: trothwy asesu is

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Plural: trothwyon asesu is

Context: Mewn parthau lle y mae lefel unrhyw lygrydd a grybwyllir ym mharagraff (1) yn cyfateb i'r trothwy asesu uwch neu'r trothwy asesu is ar gyfer y llygrydd hwnnw y cyfeirir atynt yn rheoliad 5 neu'n dod rhwng y trothwyon hynny, rhaid defnyddio mesuriadau sefydlog mewn perthynas â'r llygrydd hwnnw, ond caniateir cyfuno hynny â gwneud mesuriadau dangosol neu â modelu neu â'r naill ddull a'r llall.

Notes: Daw'r frawddeg gyd-destunol o Reoliadau Safonau Ansawdd Aer (Cymru) 2010.

Last Updated: 16 September 2024

English: lower assessment threshold

Welsh: trothwy asesu is

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Plural: trothwyon asesu is

Context: Mewn parthau lle y mae lefel unrhyw lygrydd a grybwyllir ym mharagraff (1) yn cyfateb i'r trothwy asesu uwch neu'r trothwy asesu is ar gyfer y llygrydd hwnnw y cyfeirir atynt yn rheoliad 5 neu'n dod rhwng y trothwyon hynny, rhaid defnyddio mesuriadau sefydlog mewn perthynas â'r llygrydd hwnnw, ond caniateir cyfuno hynny â gwneud mesuriadau dangosol neu â modelu neu â'r naill ddull a'r llall.

Notes: Daw'r frawddeg gyd-destunol o Reoliadau Safonau Ansawdd Aer (Cymru) 2010.

Last Updated: 16 September 2024

English: lower back pain

Welsh: poen yng ngwaelod y cefn

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: poenau yng ngwaelod y cefn

Last Updated: 18 May 2018

English: lower back pain

Welsh: poen yng ngwaelod y cefn

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: poenau yng ngwaelod y cefn

Last Updated: 18 May 2018

English: lower confidence interval limit

Welsh: terfyn isaf cyfwng hyder

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Notes: Sylwer mai 'terfyn isaf y cyfwng hyder' fyddai'n gywir wrth gyfeirio at gyfwng hyder penodol.

Last Updated: 29 April 2021

English: lower confidence interval limit

Welsh: terfyn isaf cyfwng hyder

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Notes: Sylwer mai 'terfyn isaf y cyfwng hyder' fyddai'n gywir wrth gyfeirio at gyfwng hyder penodol.

Last Updated: 29 April 2021

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