TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: optimeiddio gofal
English: care optimisation
Status B
Subject: Health
Part of speech: Verb
Last updated: 21 February 2025
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: 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
Welsh: Oren – nawr
English: Orange – now
Status B
Subject: Health
Part of speech: Proper noun
Definition: Categori ymateb ar gyfer cyflyrau difrifol lle mae angen asesiad clinigol wyneb yn wyneb, profion a throsglwyddo i’r ysbyty neu ofal arbenigol (ee claf yr amheuir ei fod yn dioddef strôc).
Notes: Un o gategorïau ymateb y Gwasanaeth Ambiwlans, o 1 Gorffennaf 2025 ymlaen. Ceir 5 categori ymateb: porffor; coch; oren; melyn; gwyrdd.
Last updated: 2 December 2025
Welsh: Oren: sensitif o ran amser
English: Orange: time sensitive
Status B
Subject: Health
Part of speech: Adjective
Definition: Categori ymateb ambiwlansys ar gyfer cyflyrau fel strôc sydd angen ymateb cyflym a gofal gan glinigwyr ambiwlans cyn cludo’r claf i’r ysbyty i gael gofal arbenigol.
Notes: Un o'r categorïau ymateb newydd ar gyfer ambiwlansys.
Last updated: 31 July 2025
Welsh: o'r fferm i'r fforc
English: from farm to fork
Status B
Subject: Agriculture
Part of speech: Adjective
Context: Y broses o gynhyrchu bwyd.
Last updated: 1 February 2012
Welsh: organau cenhedlol-wrinol
English: genito-urinary organs
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 17 July 2006
Welsh: organau cenhedlu
English: genital organs
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 17 July 2006
Welsh: organau cenhedlu
English: genitals
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 21 May 2008
Welsh: organau cyrff meirw
English: cadaveric organs
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 17 July 2006
Welsh: organau treulio
English: digestive organs
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 3 March 2006
Welsh: organeb letyol
English: host organism
Status B
Subject: Animals
Part of speech: Noun, Feminine, Singular
Plural: organebau lletyol
Definition: An animal or plant that harbors and provides sustenance for another organism (the parasite).
Last updated: 10 November 2016
Welsh: organeb letyol derfynol
English: dead-end host
Status B
Subject: Animals
Part of speech: Noun, Feminine, Singular
Plural: organebau lletyol terfynol
Definition: A host from which infectious agents are not transmitted to other susceptible hosts.
Last updated: 10 November 2016
Welsh: organeb wedi'i haddasu'n enetig
English: genetically modified organism
Status C
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Last updated: 29 July 2003
Welsh: organedd a addaswyd yn enetig
English: genetically modified organism
Status C
Subject: Law
Part of speech: Noun, Masculine, Singular
Last updated: 16 April 2008
Welsh: Organic Milk Co-operative
English: Organic Milk Co-operative
Status C
Subject: Agriculture
Part of speech: Neutral
Definition: Enw cwmni.
Last updated: 30 October 2009
Welsh: organig
English: organic
Status C
Subject: Environment
Part of speech: Adjective
Last updated: 27 January 2004
Welsh: organ leisiol
English: articulator
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Plural: organau lleisiol
Definition: Rhan o'r corff sy'n ymwneud â chynanu lleferydd, gan gynnwys y tafod, y daflod feddal, y genau, y dannedd a'r gwefusau.
Notes: O ganllawiau ar leferydd, iaith a chyfathrebu. Defnyddir y ffurf luosog gan amlaf.
Last updated: 14 March 2024
Welsh: organoffosfforws
English: organophosphorus
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 2 February 2006
Welsh: o'r gradell
English: griddled
Status B
Subject: Food
Part of speech: Adjective
Last updated: 13 June 2019
Welsh: orgraffyddol
English: orthographic
Status B
Subject: Culture and the arts
Part of speech: Adjective
Definition: Yn ymwneud â'r orgraff, sef system sillafu iaith.
Notes: Term o faes ieithyddiaeth a ddefnyddir mewn deunyddiau sy’n gysylltiedig â CEFR, y Fframwaith Cyfeirio Cyffredin Ewropeaidd ar gyfer Ieithoedd.
Last updated: 2 October 2025
Welsh: o'r gwaelod i fyny
English: bottom-up
Status C
Subject: Politics
Definition: eg bottom-up approach
Last updated: 6 April 2004
Welsh: O'r Gymdogaeth i'r Wlad Gyfan: Plismona ein Cymunedau gyda'n Gilydd
English: From the Neighbourhood to the National: Policing our Communities Together
Status A
Subject: Environment
Part of speech: Neutral
Definition: Cyhoeddiad y Swyddfa Gartref, Gorffennaf 2008
Last updated: 27 April 2010
Welsh: oriau a ganiateir
English: permitted hours
Status B
Subject: Justice and order
Part of speech: Noun, Plural
Last updated: 1 August 2012
Welsh: oriau agor
English: opening hours
Status A
Subject: Economic development
Part of speech: Noun, Plural
Last updated: 27 October 2005
Welsh: oriau annodweddiadol
English: atypical hours
Status A
Subject: Social services
Part of speech: Noun, Plural
Context: With regards to providing services.
Last updated: 18 June 2013
Welsh: oriau blynyddol
English: annualised hours
Status C
Subject: Personnel
Part of speech: Noun, Plural
Definition: Employees work on the basis of the number of hours to be worked over a year rather than a week - usually used to fit in with peaks and troughs of work.
Last updated: 4 September 2003
Welsh: oriau brig
English: peak hours
Status A
Subject: Culture and the arts
Part of speech: Noun, Plural
Last updated: 11 March 2004
Welsh: oriau contract
English: contract hours
Status C
Subject: Personnel
Part of speech: Noun, Plural
Last updated: 28 September 2005