TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: Braster ac Olew Llysiau Sefydlog Amrwd, wedi’u Puro neu wedi'u Ffracsiynu
English: Fixed Vegetable Fats and Oils, Crude, Refined, Fractionated
Status B
Subject: Food
Part of speech: Proper noun
Notes: Categori cynnyrch yn y Dosbarthiad Safonol Masnach Ryngwladol (SITC).
Last updated: 3 December 2025
Welsh: capsiwlau olew pysgod
English: fish oil capsules
Status B
Subject: Food
Part of speech: Noun, Plural
Last updated: 31 January 2012
Welsh: chwilio am olew a nwy alltraeth ac elwa arnynt
English: offshore oil and gas exploration and exploitation
Status C
Subject: Law
Part of speech: Verb
Last updated: 7 June 2011
Welsh: Confensiwn Bod yn Barod am Lygredd Olew, Ymateb Iddo a Chydweithredu mewn Perthynas ag Ef 1990
English: Oil Pollution Preparedness, Response and Co-operation Convention 1990
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Yr offeryn rhyngwladol sy’n rhoi’r fframwaith ar gyfer hwyluso cydweithrediad a chymorth rhyngwladol wrth baratoi rhag digwyddiadau mawr o lygru ag olew, ac wrth ymateb iddynt.
Last updated: 15 June 2023
Welsh: Cronfeydd Iawndal Rhyngwladol am Lygredd Olew
English: International Oil Pollution Compensation Funds
Status C
Subject: Environment
Part of speech: Noun, Plural
Definition: IOPC Funds
Last updated: 27 May 2004
Welsh: Cymdeithas Dechnegol Llosgi Olew
English: OFTEC
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: Oil Firing Technical Association
Last updated: 6 April 2011
Welsh: Cymdeithas Dechnegol Llosgi Olew
English: Oil Firing Technical Association
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: OFTEC
Last updated: 6 April 2011
Welsh: cynhyrchion olew puredig
English: refined oil products
Status C
Subject: Economic development
Part of speech: Noun, Plural
Last updated: 18 August 2014
Welsh: dyfais llosgi olew gwastraff
English: waste oil burning appliance
Status C
Subject: Law
Part of speech: Noun, Masculine, Singular
Last updated: 30 April 2008
Welsh: echdynnu olew a nwy
English: oil and gas extraction
Status C
Subject: Environment
Part of speech: Verb
Last updated: 12 September 2007
Welsh: ffrwd cymysgu olew nwy
English: gas oil blending stream
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last updated: 1 September 2010
Welsh: gweithrediadau olew a nwy ar y môr
English: offshore oil and gas operations
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 23 July 2003
Welsh: gweithrediadau olew a nwy ar y tir
English: onshore oil and gas operations
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 23 July 2003
Welsh: gwresogi ag olew neu nwy
English: oil and gas heating
Status C
Subject: Environment
Part of speech: Verb
Last updated: 8 July 2008
Welsh: hadau olew
English: oilseeds
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 28 March 2018
Welsh: hadau olew y tynnwyd yr olew ohonynt
English: oil extracted oilseeds
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 28 March 2018
Welsh: hadau rêp had olew
English: oilseed rape seeds
Status C
Subject: Environment
Part of speech: Noun, Plural
Last updated: 24 February 2003
Welsh: had olew
English: oilseed
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 24 February 2003
Welsh: Olew a Braster Anifeiliaid
English: Animal Oils and Fats
Status B
Subject: Food
Part of speech: Proper noun
Notes: Categori cynnyrch yn y Dosbarthiad Safonol Masnach Ryngwladol (SITC).
Last updated: 7 May 2025
Welsh: olew blodau'r haul
English: sunflower oil
Status A
Subject: Food
Part of speech: Noun, Masculine, Singular
Last updated: 4 April 2019
Welsh: olew crai
English: crude oil
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 9 June 2022
Welsh: Olew crai Brent
English: Brent Crude
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 20 April 2012
Welsh: olew gwresogi
English: heating oil
Status B
Subject: Housing
Part of speech: Noun, Masculine, Singular
Last updated: 18 March 2026
Welsh: olew had rêp
English: rapeseed oil
Status B
Subject: Food
Part of speech: Noun, Masculine, Singular
Last updated: 8 March 2012
Welsh: olew llysiau
English: vegetable oil
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 5 September 2003
Welsh: olew llysiau annirlawn
English: unsaturated vegetable oil
Status B
Subject: Food
Part of speech: Noun, Masculine, Singular
Plural: olewau llysiau annirlawn
Last updated: 3 December 2025
Welsh: olew llysiau hydrogenaidd
English: hydrogenated vegetable oil
Status B
Subject: Food
Part of speech: Noun, Masculine, Singular
Last updated: 8 March 2012
Welsh: olew mwynol
English: mineral oil
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 5 September 2003
Welsh: olew nwy
English: gas oil
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Olew sy’n cael ei ffurfio trwy ddistyllu petrolewm trwy dwymo’r olew, ei droi’n nwy ac yna ei gyddwyso.
Last updated: 1 September 2010
Welsh: olew olewydd
English: olive oil
Status A
Subject: Food
Part of speech: Noun, Masculine, Singular
Last updated: 21 July 2022
Welsh: olew palmwydd
English: palm oil
Status B
Subject: Food
Part of speech: Noun, Masculine, Singular
Last updated: 8 March 2012
Welsh: olew siâl
English: shale oil
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 23 February 2026
Welsh: olew tanwydd
English: fuel oil
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 20 May 2004
Welsh: piblinell olew
English: oil pipeline
Status C
Subject: Economic development
Part of speech: Noun, Feminine, Singular
Last updated: 18 August 2014
Welsh: planhigion olew
English: oil plants
Status C
Subject: Plants
Part of speech: Noun, Plural
Last updated: 5 June 2006
Welsh: Rheoliadau Adnoddau Dŵr (Rheoli Llygredd) (Silwair, Slyri ac Olew Tanwydd Amaethyddol) (Cymru) 2010
English: The Water Resources (Control of Pollution) (Silage, Slurry and Agriculture Fuel Oil) (Wales) Regulations 2010
Status A
Subject: Titles of legislation
Part of speech: Noun, Plural
Last updated: 21 June 2010
Welsh: Rheoliadau Adnoddau Dŵr (Rheoli Llygredd) (Silwair, Slyri ac Olew Tanwydd Amaethyddol) (Cymru) 2010
English: Water Resources (Control of Pollution) (Silage, Slurry and Agriculture Fuel Oil) (Wales) Regulations 2010
Status B
Subject: Titles of legislation
Part of speech: Noun, Plural
Last updated: 1 October 2020
Welsh: Rheoliadau Adnoddau Dŵr (Rheoli Llygredd) (Storio Olew) (Cymru) 2016
English: The Water Resources (Control of Pollution) (Oil Storage) (Wales) Regulations 2016
Status A
Subject: Titles of legislation
Part of speech: Proper noun, Plural
Last updated: 30 March 2016
Welsh: Rheoliadau Gweithgareddau Petrolewm Alltraeth (Atal a Rheoli Llygredd Olew) 2005
English: The Offshore Petroleum Activities (Oil Pollution Prevention and Control) Regulations 2005
Status B
Subject: Titles of legislation
Part of speech: Noun, Plural
Notes: Teitl cwrteisi ar ddarn o ddeddfwriaeth sydd ar gael yn Saesneg yn unig.
Last updated: 27 February 2020
Welsh: Rheoliadau Hadau Planhigion Olew a Ffeibr (Cymru) 2004
English: The Oil and Fibre Plant Seed (Wales) Regulations 2004
Status A
Subject: Titles of legislation
Part of speech: Noun, Plural
Context: Teitl cwrteisi dogfen uniaith Saesneg.
Last updated: 4 November 2004
Welsh: Rheoliadau Hadau Planhigion Olew a Ffibr (Diwygio) (Cymru) 2003
English: The Oil and Fibre Plant Seeds (Amendment) (Wales) Regulations 2003
Status A
Subject: Titles of legislation
Part of speech: Noun, Plural
Last updated: 24 November 2003
Welsh: Rheoliadau Llongau Masnach (Confensiwn Bod yn Barod am Lygredd Olew, Ymateb Iddo a Chydweithredu mewn Perthynas ag Ef) 1998
English: Merchant Shipping (Oil Pollution Preparedness, Response and Co-operation Convention) Regulations 1998
Status B
Subject: Titles of legislation
Part of speech: Noun, Plural
Notes: Cyfieithiad cwrteisi ar enw darn o ddeddfwriaeth sydd ar gael yn Saesneg yn unig.
Last updated: 15 June 2023
Welsh: Rheoliadau Olew Olewydd (Safonau Marchnata) 2014
English: The Olive Oil (Marketing Standards) Regulations 2014
Status B
Subject: Titles of legislation
Part of speech: Noun, Plural
Notes: Teitl cwrteisi ar ddarn o ddeddfwriaeth sydd ar gael yn Saesneg yn unig.
Last updated: 19 February 2019
Welsh: Rheoliadau Piblinellau, Petrolewm, Gwaith Trydan a Stocio Olew (Diwygiadau Amrywiol) (Ymadael â’r UE) 2018
English: Pipe-lines, Petroleum, Electricity Works and Oil Stocking (Miscellaneous Amendments) (EU Exit) Regulations 2018
Status B
Subject: Titles of legislation
Part of speech: Noun, Plural
Notes: Teitl cwrteisi ar ddarn o ddeddfwriaeth sydd ar gael yn Saesneg yn unig.
Last updated: 29 November 2018
Welsh: rêp had olew
English: oilseed rape
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 1 October 2020
Welsh: sector olew canol
English: midstream oil sector
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: The Midstream Oil sector is responsible for the processing, storage marketing and Transport of semi processed products.
Last updated: 5 June 2015
Welsh: sector olew is
English: downstream oil sector
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: The Downstream Oil sector is the last stage of the oil processing cycle. The networks and companies responsible retailing and distribution of the products.
Last updated: 5 June 2015
Welsh: sector olew uwch
English: upstream oil sector
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: The Upstream Oil sector (exploration and production sector) encompasses all activities, starting from searching (exploration), recovery and the production of crude oil and / or Natural gas.
Last updated: 5 June 2015
Welsh: storfa olew tanwydd amaethyddol
English: agricultural fuel oil installation
Status C
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Last updated: 23 October 2003