TermCymru

Results are displayed in English alphabetical order A-Z
English: optimum business strategy
Welsh: y strategaeth fusnes orau bosibl
Status C
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Last Updated: 7 September 2005
English: optimum yield
Welsh: cyweiniad optimwm
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: OY
Context: of fish
Last Updated: 2 April 2013
English: opt-in system
Welsh: system optio i mewn
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Last Updated: 18 May 2012
English: option
Welsh: dewis
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last Updated: 19 July 2005
English: optional
Welsh: dewisol
Status C
Subject: Agriculture
Part of speech: Adjective
Last Updated: 29 July 2003
English: Optional Action
Welsh: Gweithred Opsiynol
Status B
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Plural: Gweithredoedd Opsiynol
Definition: Gweithgaredd dewisol y gall ffermwyr ei wneud er mwyn mynd ymhellach na gofynion sylfaenol y Cynllun Ffermio Cynaliadwy, ac i gael taliadau ychwanegol am hynny.
Context: Bydd set o ofynion yn dod gyda phob Gweithred Opsiynol a Gweithred Gydweithredol wirfoddol, fydd yn ymdrin yn benodol â’r gweithgaredd sy’n cael ei gefnogi.
Notes: Elfen yn y Cynllun Ffermio Cynaliadwy.
Last Updated: 4 June 2026
English: Optional Assessment Materials
Welsh: Deunyddiau Asesu Dewisol
Status C
Subject: Education
Part of speech: Noun, Plural
Definition: OAM
Last Updated: 25 July 2005
English: Optional Assessment Materials in English, Welsh, and Welsh Second Language at KS2 and 3
Welsh: Deunyddiau Asesu Dewisol ar gyfer Saesneg, Cymraeg a Chymraeg Ail Iaith, CA 2 a 3
Status C
Subject: Education
Part of speech: Noun, Plural
Definition: cyhoeddiad ACCAC
Last Updated: 7 October 2002
English: Optional Layer
Welsh: Yr Haen Opsiynol
Status B
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Definition: Y lefel o’r Cynllun Ffermio Cynaliadwy sy’n cynnig taliadau ychwanegol i ffermwyr sy’n dewis cyflawni gweithredoedd gwirfoddol, mwy penodol neu fwy heriol na’r gofynion sylfaenol.
Context: Byddwn yn cadw'r strwythur tair haen a ddisgrifiwyd mewn ymgyngoriadau blaenorol - yr Haen Gyffredinol, yr Haen Opsiynol a'r Haen Gydweithredol.
Notes: Elfen yn y Cynllun Ffermio Cynaliadwy.
Last Updated: 4 June 2026
English: optional statement
Welsh: datganiad dewisol
Status A
Subject: Education
Part of speech: Noun, Masculine, Singular
Last Updated: 15 January 2008
English: Optional Supporting Capital Works
Welsh: Gwaith Cyfalaf Ategol Opsiynol
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Notes: Math o brosiect o dan gynllun grantiau bach Glastir.
Last Updated: 6 December 2016
English: optioneering
Welsh: gwaith ar opsiynau
Status C
Subject: General
Part of speech: Noun, Masculine, Singular
Last Updated: 17 March 2022
English: Option Limit
Welsh: Terfyn yr Opsiwn
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Glastir
Last Updated: 25 November 2014
English: option menu
Welsh: dewislen
Status C
Subject: Education
Part of speech: Noun, Feminine, Singular
Plural: dewislenni
Definition: 14-19 Learning Pathways
Last Updated: 21 May 2025
English: option of study
Welsh: opsiwn astudio
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last Updated: 2 August 2010
English: Option Points Limit
Welsh: Terfyn Pwyntiau'r Opsiwn
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Glastir
Last Updated: 25 November 2014
English: Option Report
Welsh: Adroddiad ar Opsiynau
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: A stage in the project management system used by Network Rail.
Last Updated: 23 January 2012
English: Options, Costs and Benefits
Welsh: Opsiynau, Costau a Manteision
Status B
Subject: Housing
Part of speech: Noun, Plural
Notes: Pennawd safonol yn nogfennau Asesiadau Effaith Rheoleiddio.
Last Updated: 10 May 2016
English: Option Selection Report
Welsh: Adroddiad ar Ddewis Opsiwn
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: A stage in the project management system used by Network Rail.
Last Updated: 23 January 2012
English: options for political structures
Welsh: opsiynau ar gyfer strwythurau gwleidyddol
Status C
Subject: Local government
Part of speech: Noun, Plural
Last Updated: 2 November 2010
English: Options Map
Welsh: Map Opsiynau
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: Mapiau Opsiynau
Context: Mae’r Map Opsiynau hwn yn dangos eich holl Opsiynau Rheoli Glastir.
Notes: Term sy’n berthnasol i gynllun Glastir.
Last Updated: 8 February 2016
English: Options Menu Development Project Leader
Welsh: Arweinydd y Prosiect Datblygu Dewislenni
Status C
Subject: Welsh Government posts and departments
Part of speech: Noun, Masculine, Singular
Last Updated: 14 November 2007
English: options of study
Welsh: opsiynau astudio
Status C
Subject: Education
Part of speech: Noun, Plural
Last Updated: 2 August 2010
English: option value
Welsh: gwerth opsiwn
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: In cost–benefit analysis and social welfare economics, the term option value refers to the value that is placed on private willingness to pay for maintaining or preserving a public asset or service even if there is little or no likelihood of the individual actually ever using it. The concept is most commonly used in public policy assessment to justify continuing investment in parks, wildlife refuges and land conservation, as well as rail transportation facilities and services.
Last Updated: 10 January 2017
English: optochiral switch
Welsh: swits optocirol
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: switsys optocirol
Last Updated: 19 January 2023
English: optoelectronics
Welsh: optoelectroneg
Status C
Subject: Economic development
Part of speech: Noun, Feminine, Singular
Last Updated: 2 February 2006
English: Optoelectronics Technology and Incubation Centre
Welsh: Canolfan Dechnoleg a Deori Optoelectroneg
Status C
Subject: Economic development
Part of speech: Noun, Feminine, Singular
Definition: OpTIC St Asaph
Last Updated: 5 December 2006
English: optometric
Welsh: optometrig
Status C
Subject: Health
Part of speech: Adjective
Last Updated: 28 April 2008
English: Optometric Adviser
Welsh: Cynghorydd Optometrig
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 11 October 2004
English: Optometric Advisor
Welsh: Cynghorydd Optometrig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 1 June 2020
English: optometric assistant
Welsh: cynorthwyydd optometrig
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: cynorthwywyr optometrig
Definition: Person sy'n cyflawni dyletswyddau clinigol, gweinyddol a gwasanaeth i gwsmeriaid, i helpu optometrydd.
Last Updated: 25 November 2022
English: optometric practice
Welsh: practis optometrig
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: practisau optometrig
Last Updated: 4 June 2020
English: optometrist
Welsh: optometrydd
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
English: optometry
Welsh: optometreg
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Last Updated: 10 August 2004
English: Optometry and Audiology Branch
Welsh: Y Gangen Optometreg ac Awdioleg
Status A
Subject: Welsh Government posts and departments
Part of speech: Feminine, Singular
Last Updated: 18 November 2021
English: optometry practice
Welsh: practis optometreg
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: practisau optometreg
Last Updated: 25 November 2022
English: optometry service
Welsh: gwasanaeth optometreg
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwasanaethau optometreg
Last Updated: 25 November 2022
English: Optometry Wales
Welsh: Optometreg Cymru
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: The negotiating organisation in Wales.
Last Updated: 11 October 2004
English: opt-out
Welsh: trefn eithrio
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last Updated: 26 May 2010
English: opt-out
Welsh: trefniadau eithrio
Status C
Subject: Environment
Part of speech: Noun, Plural
Last Updated: 26 May 2010
English: opt out
Welsh: optio allan
Status B
Subject: Health
Part of speech: Verb
Last Updated: 18 May 2012
English: opt-out system
Welsh: system optio allan
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Last Updated: 18 May 2012
English: optronics
Welsh: optroneg
Status C
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last Updated: 13 May 2004
English: optronics industry
Welsh: diwydiant optroneg
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 19 December 2006
English: OPZ
Welsh: parth cynllunio amlinellol
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Plural: parthau cynllunio amlinellol
Notes: Dyma'r acronym Saesneg a ddefnyddir am outline planning zone.
Last Updated: 23 March 2021
English: orache spinach
Welsh: sbinaets yr ardd
Status C
Subject: Food
Part of speech: Noun, Masculine, Singular
Definition: Atriplex hortensis
Context: Also known as "garden spinach".
Last Updated: 31 March 2009
English: Oracle platform
Welsh: system Oracle
Status C
Subject: ICT
Definition: A computer system.
Last Updated: 5 June 2006
English: oracy
Welsh: llafaredd
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Y gallu i fynegi'n huawdl a gramadegol gywir ar lafar.
Context: Mae hyn yn cynnwys caffael sgiliau iaith a lleferydd a llafaredd sy'n sail i'w gallu i ddysgu darllen, ysgrifennu a datrys problemau.
Last Updated: 13 March 2024
English: ORAHS
Welsh: Ymchwil Weithredol a Gymhwysir i Wasanaethau Iechyd
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Operational Research Applied to Health Service
Last Updated: 6 September 2011
English: oral anticoagulant
Welsh: gwrthgeulydd drwy'r geg
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: gwrthgeulyddion drwy'r geg
Last Updated: 11 June 2026