TermCymru

Results are displayed in Welsh alphabetical order A-Y

English: non-rotational option

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: A management option that remain in the same place on land for the duration of a Glastir agreement; for example, hedgerow management.

Last updated: 4 December 2012

Welsh: opsiwn rheoli

English: management option

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 27 July 2010

Welsh: opsiwn rheoli gwastraff cynaliadwy

English: sustainable waste management option

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: Dull rheoli gwastraff rhanbarthol.

Last updated: 30 March 2006

Welsh: opsiwn rheoli’r Elfen Cymru Gyfan

English: All Wales element management option

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 27 July 2010

Welsh: opsiwn sylfaenol

English: baseline option

Status A

Subject: Law

Part of speech: Noun, Masculine, Singular

Context: Yng nghyd-destun dogfennau Asesiadau Effaith Rheoleiddiol.

Last updated: 23 April 2015

Welsh: opsiwn symud ymlaen

English: move-on option

Status B

Subject: Housing

Part of speech: Noun, Masculine, Singular

Plural: opsiynau symud ymlaen

Context: Dylid ystyried pob opsiwn symud ymlaen priodol ar gyfer unrhyw un y mae ei leoliad cychwynnol (mewn Canolfan Groeso neu gyda noddwr) wedi dod i ben neu wedi chwalu, gan gynnwys opsiynau lletya, tai cymdeithasol a llety rhent preifat.

Notes: Yng nghyd-destun yr ymateb i sefyllfa Wcráin, dyma ymadrodd a ddefnyddir wrth gyfeirio at newid lleoliad llety o dan y cynllun Cartrefi i Wcráin.

Last updated: 26 January 2023

Welsh: opsiwn sy'n cylchdroi

English: rotational option

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: A management option which can be moved around land during the course of a Glastir agreement; for example, skylark plots, wild bird seed mix plots, conservation headlands.

Last updated: 4 December 2012

Welsh: Opsiwn y Llwybr Carlam

English: Fast Track Option

Status C

Subject: Europe

Part of speech: Noun, Masculine, Singular

Last updated: 11 September 2007

Welsh: opsiwn y Taliad Safonol ar sail Arwynebedd

English: Flat Area option

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 15 March 2004

Welsh: opsiwn y twnnel

English: tunnelling option

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Context: Common Agricultural Policy

Last updated: 22 April 2014

Welsh: opsiynau amhenodol eu deiliadaeth

English: tenure neutral options

Status C

Subject: Housing

Part of speech: Noun, Plural

Last updated: 25 November 2009

Welsh: opsiynau ar gyfer strwythurau gwleidyddol

English: options for political structures

Status C

Subject: Local government

Part of speech: Noun, Plural

Last updated: 2 November 2010

Welsh: opsiynau ar sail parseli

English: parcel based options

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Last updated: 5 April 2011

Welsh: opsiynau astudio

English: options of study

Status C

Subject: Education

Part of speech: Noun, Plural

Last updated: 2 August 2010

Welsh: Opsiynau, Costau a Manteision

English: Options, Costs and Benefits

Status B

Subject: Housing

Part of speech: Noun, Plural

Notes: Pennawd safonol yn nogfennau Asesiadau Effaith Rheoleiddio.

Last updated: 10 May 2016

Welsh: opsiynau - heb fod ar sail parseli

English: non-parcel based options

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Context: Yng nghyd-destun Glastir.

Last updated: 5 April 2011

Welsh: Opsiynau Rheoli y gellir eu Cylchdroi

English: Rotating Management Options

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Last updated: 7 October 2011

Welsh: optegydd

English: optician

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optegwyr

Definition: Term cyffredinol a ddefnyddir i gyfeirio at weithwyr proffesiynol yn y maes optegol, boed yn optegwyr cyflenwi, optometryddion neu offthalmolegwyr.

Last updated: 25 November 2022

Welsh: optegydd cyflenwi

English: DO

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optegwyr cyflenwi

Notes: Dyma'r acronym Saesneg a ddefnyddir am 'dispensing optician'.

Last updated: 25 November 2022

Welsh: optegydd cyflenwi

English: dispensing optician

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optegwyr cyflenwi

Definition: Optegydd sy'n cynghori ar y fframiau a'r lensys sbectol gorau ar gyfer person, ac sy'n eu darparu a'u ffitio.

Context: Ystyr “optegydd cyflenwi” (“dispensing optician”) yw person sydd wedi ei gofrestru yn y gofrestr o optegwyr cyflenwi a gynhelir o dan adran 7(b) o Ddeddf 1989 ac sy’n cael ei reoleiddio gan y Cyngor Optegol Cyffredinol.

Notes: Daw'r testun cyd-destunol o Reoliadau Unigolion sydd wedi eu Hesemptio o ran Triniaethau Arbennig (Cymru) 2024.

Last updated: 13 June 2025

Welsh: optegydd lensys cyffwrdd

English: contact lens optician

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optegwyr lensys cyffwrdd

Last updated: 29 September 2022

Welsh: optegydd lensys cyffwrdd

English: contact lens optician

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optegwyr lensys cyffwrdd

Definition: Optegydd sy'n gymwys i osod a darparu ôl-ofal i bobl sydd angen lensys cyffwrdd.

Last updated: 25 November 2022

Welsh: OPTIC

English: OPTIC

Status A

Subject: Economic development

Part of speech: Neutral

Definition: Opto-electronics Technology and Incubation Centre, St Asaph

Last updated: 19 December 2006

Welsh: optimeiddio gofal

English: care optimisation

Status B

Subject: Health

Part of speech: Verb

Last updated: 21 February 2025

Welsh: optimeiddio meddyginiaethau

English: medicines optimisation

Status B

Subject: Health

Part of speech: Verb

Last updated: 13 August 2026

Welsh: optimeiddio peiriannau chwilio

English: search engine optimisation

Status C

Subject: ICT

Part of speech: Verb

Last updated: 12 November 2014

Welsh: optimeiddio ynni

English: energy optimization

Status B

Subject: Environment

Part of speech: Verb

Definition: Defnyddio neu beidio â defnyddio ynni yn yr amgylchedd adeiledig er mwyn sicrhau'r manteision mwyaf posibl ar gyfer yr hinsawdd ac ar gyfer pobl fel ei gilydd.

Last updated: 5 August 2020

Welsh: optio allan

English: opt out

Status B

Subject: Health

Part of speech: Verb

Last updated: 18 May 2012

Welsh: optoelectroneg

English: optoelectronics

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last updated: 2 February 2006

Welsh: optometreg

English: optometry

Status C

Subject: Health

Part of speech: Noun, Feminine, Singular

Last updated: 10 August 2004

Welsh: Optometreg Cymru

English: Optometry Wales

Status C

Subject: Health

Part of speech: Noun, Feminine, Singular

Definition: The negotiating organisation in Wales.

Last updated: 11 October 2004

Welsh: optometreg gofal sylfaenol

English: primary care optometry

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 25 November 2022

Welsh: optometrig

English: optometric

Status C

Subject: Health

Part of speech: Adjective

Last updated: 28 April 2008

Welsh: optometrydd

English: optometrist

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: optometryddion

Definition: Clinigydd sy'n darparu gwasanaethau gofal sylfaenol ar gyfer llygaid, ac yn cynnal archwiliadau llygaid am ddiffygion, abnormaleddau a chlefydau sy'n effeithio ar y llygaid ac ar iechyd yn gyffredinol.

Context: Ystyr “optometrydd” (“optometrist”) yw person sydd wedi ei gofrestru yn y gofrestr o optometryddion a gynhelir o dan adran 7(a) o Ddeddf 1989 ac sy’n cael ei reoleiddio gan y Cyngor Optegol Cyffredinol.

Notes: Daw'r testun cyd-destunol o Reoliadau Unigolion sydd wedi eu Hesemptio o ran Triniaethau Arbennig (Cymru) 2024.

Last updated: 13 June 2025

Welsh: Optometrydd Cofrestredig

English: Registered Optometrist

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: Optometryddion Cofrestredig

Last updated: 1 June 2020

Welsh: optometryddion achrededig

English: accredited optometrists

Status C

Subject: Health

Part of speech: Noun, Plural

Last updated: 8 December 2010

Welsh: Optometryddion Ysbytai

English: Hospital Optometrists

Status C

Subject: Health

Part of speech: Noun, Plural

Last updated: 25 November 2009

Welsh: Optometrydd Presgripsiynu Annibynnol

English: Independent Prescribing Optometrists

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: Optometryddion Presgripsiynu Annibynnol

Last updated: 29 September 2022

Welsh: optroneg

English: optronics

Status C

Subject: ICT

Part of speech: Noun, Feminine, Singular

Last updated: 13 May 2004

Welsh: o'r alwad i'r nodwydd

English: call to needle time

Status C

Subject: Health

Part of speech: Verb

Last updated: 7 September 2005

Welsh: Orbit Isel

English: Low Earth Orbit

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

Welsh: Orbit Isel

English: LEO

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: Dyma'r acronym Saesneg a ddefnyddir am Low Earth Orbit. Pe ffefrid defnyddio ymadrodd mwy disgrifiadol, gellid defnyddio 'orbit isel o amgylch y ddaear'.

Last updated: 25 March 2026

Welsh: orbitol

English: orbital

Status C

Subject: ICT

Part of speech: Adjective

Last updated: 24 September 2002

Welsh: O'r Bol i'r Fron

English: From Bump to Breastfeeding

Status A

Subject: Health

Part of speech: Neutral

Definition: DVD title.

Last updated: 26 January 2009

Welsh: o'r brig i lawr

English: top-down

Status C

Subject: General

Part of speech: Preposition

Definition: eg top-down approach

Last updated: 6 April 2004

Welsh: O'r Cymoedd i'r Gwaith

English: Valleys to Work

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Notes: Prosiect sy'n rhedeg bysiau i gael pobl i weithleoedd yng nghwm Rhondda.

Last updated: 4 March 2021

Welsh: O'r Cyrion i'r Canol

English: From the Margins to the Centre

Status C

Subject: Housing

Definition: Dogfen ymchwil

Last updated: 20 May 2004

Welsh: ordinhad

English: ordinance

Status C

Subject: Law

Part of speech: Noun, Masculine, Singular

Plural: ordinhadau

Definition: One of the forms taken by legislation under the royal prerogative, normally legislation relating to UK dependencies.

Last updated: 21 May 2025

Welsh: Ordinhad Dehongli a Chymalau Cyffredinol

English: Interpretation and General Clauses Ordinance

Status B

Subject: Titles of legislation

Part of speech: Noun, Masculine, Singular

Context: Er enghraifft mae Ordinhad Dehongli a Chymalau Cyffredinol Hong Kong yn cynnwys nifer o ddarpariaethau sy'n ymdrin â materion dwyieithog.

Notes: Cyfieithiad cwrteisi o deitl darn o ddeddfwriaeth nad oes teitl Cymraeg iddo

Last updated: 5 July 2017

Welsh: OREC

English: OREC

Status A

Subject: Europe

Part of speech: Proper noun

Notes: Menter Ewropeaidd. Dyma'r acronym a ddefnyddir am Offshore Renewable Energy Catapult.

Last updated: 12 November 2020

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