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English: Certificate of Initial Fitness

Welsh: Tysgysgrif Addasrwydd Cychwynnol

Status C

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: COIF

Context: Tystysgrif a roddir gan yr Adran Drafnidiaeth/VOSA ar gyfer cerbydau sy'n cario teithwyr.

Last Updated: 8 December 2010

English: Certificate of Initial Fitness

Welsh: Tysgysgrif Addasrwydd Cychwynnol

Status C

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: COIF

Context: Tystysgrif a roddir gan yr Adran Drafnidiaeth/VOSA ar gyfer cerbydau sy'n cario teithwyr.

Last Updated: 8 December 2010

English: certificate of land ownership

Welsh: tystysgrif perchenogaeth tir

Status C

Subject: Planning

Part of speech: Noun, Feminine, Singular

Last Updated: 23 July 2003

English: certificate of land ownership

Welsh: tystysgrif perchenogaeth tir

Status C

Subject: Planning

Part of speech: Noun, Feminine, Singular

Last Updated: 23 July 2003

English: certificate of lawfulness

Welsh: tystysgrif cyfreithlondeb

Status A

Subject: Planning

Part of speech: Noun, Feminine, Singular

Plural: tystysgrifau cyfreithlondeb

Context: Rhaid i dystysgrif cyfreithlondeb bennu’r tir y mae’n ymwneud ag ef, disgrifio’r defnydd, y gweithrediadau neu’r mater arall y mae’n ymwneud ag ef neu â hwy, rhoi rhesymau’r awdurdod cynllunio dros benderfynu bod y defnydd, y gweithrediadau neu’r mater arall yn gyfreithlon, a datgan ar ba ddyddiad y gwnaed y cais am y dystysgrif.

Notes: Mae'r term hwn yn gyfystyr â certificate of lawful use or development / tystysgrif defnydd neu ddatblygiad cyfreithlon.

Last Updated: 30 April 2024

English: certificate of lawfulness

Welsh: tystysgrif cyfreithlondeb

Status A

Subject: Planning

Part of speech: Noun, Feminine, Singular

Plural: tystysgrifau cyfreithlondeb

Context: Rhaid i dystysgrif cyfreithlondeb bennu’r tir y mae’n ymwneud ag ef, disgrifio’r defnydd, y gweithrediadau neu’r mater arall y mae’n ymwneud ag ef neu â hwy, rhoi rhesymau’r awdurdod cynllunio dros benderfynu bod y defnydd, y gweithrediadau neu’r mater arall yn gyfreithlon, a datgan ar ba ddyddiad y gwnaed y cais am y dystysgrif.

Notes: Mae'r term hwn yn gyfystyr â certificate of lawful use or development / tystysgrif defnydd neu ddatblygiad cyfreithlon.

Last Updated: 30 April 2024

English: certificate of lawful use or development

Welsh: tystysgrif defnydd neu ddatblygiad cyfreithlon

Status A

Subject: Law

Part of speech: Noun, Feminine, Singular

Plural: tystysgrifau defnydd neu ddatblygiad cyfreithlon

Last Updated: 23 February 2026

English: certificate of lawful use or development

Welsh: tystysgrif defnydd neu ddatblygiad cyfreithlon

Status A

Subject: Law

Part of speech: Noun, Feminine, Singular

Plural: tystysgrifau defnydd neu ddatblygiad cyfreithlon

Last Updated: 23 February 2026

English: Certificate of Professional Competence

Welsh: Tystysgrif Cymhwysedd Proffesiynol

Status C

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: CPT

Context: Mae'r gyfraith yn mynnu ei bod yn rhaid i yrwyr bysiau, coetsys a lorïau proffesiynol fod â Thystysgrif Cymhwysedd Proffesiynol i Yrwyr (TCP i Yrwyr) yn ogystal â'u trwydded yrru alwedigaethol.

Last Updated: 8 December 2010

English: Certificate of Professional Competence

Welsh: Tystysgrif Cymhwysedd Proffesiynol

Status C

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: CPT

Context: Mae'r gyfraith yn mynnu ei bod yn rhaid i yrwyr bysiau, coetsys a lorïau proffesiynol fod â Thystysgrif Cymhwysedd Proffesiynol i Yrwyr (TCP i Yrwyr) yn ogystal â'u trwydded yrru alwedigaethol.

Last Updated: 8 December 2010

English: Certificate of Quality Standards

Welsh: Tystysgrif Ansawdd Safonau

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last Updated: 14 January 2003

English: Certificate of Quality Standards

Welsh: Tystysgrif Ansawdd Safonau

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last Updated: 14 January 2003

English: Certificate of Registry

Welsh: Tystysgrif Gofrestru

Status A

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: Evidence of a ship's registration.

Last Updated: 5 March 2013

English: Certificate of Registry

Welsh: Tystysgrif Gofrestru

Status A

Subject: Transport

Part of speech: Noun, Feminine, Singular

Definition: Evidence of a ship's registration.

Last Updated: 5 March 2013

English: certificate of shipment

Welsh: tystysgrif gludiant

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last Updated: 26 July 2004

English: certificate of shipment

Welsh: tystysgrif gludiant

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last Updated: 26 July 2004

English: certificate of suitability of litigation friend

Welsh: tystysgrif addasrwydd cyfaill cyfreitha

Status B

Subject: Justice and order

Part of speech: Noun, Feminine, Singular

Last Updated: 6 August 2012

English: certificate of suitability of litigation friend

Welsh: tystysgrif addasrwydd cyfaill cyfreitha

Status B

Subject: Justice and order

Part of speech: Noun, Feminine, Singular

Last Updated: 6 August 2012

English: certificate of trial readiness

Welsh: tystysgrif parodrwydd ar gyfer treial

Status B

Subject: Justice and order

Part of speech: Noun, Feminine, Singular

Context: Certificate of readiness for trial.

Last Updated: 6 August 2012

English: certificate of trial readiness

Welsh: tystysgrif parodrwydd ar gyfer treial

Status B

Subject: Justice and order

Part of speech: Noun, Feminine, Singular

Context: Certificate of readiness for trial.

Last Updated: 6 August 2012

English: Certificate of Vision Impairment

Welsh: Tystysgrif Nam ar y Golwg

Status A

Subject: Health

Part of speech: Noun, Feminine, Singular

Definition: CVI. Certificate of a Person as Sight Impaired (partially sighted) or as Severely Sight Impaired (blind).

Notes: "Nam" a ddefnyddir am "impairment" yn nheitl y ddogfen hon, ond "amhariad" sy'n arferol yn ein testunau erbyn hyn. Gweler yr erthygl ar y Model Cymdeithasol o Anabledd yn yr Arddulliadur. Yn unol â'r Model, mae amhariad ("impairment", a elwid yn "nam" o'r blaen) yn nodwedd ar berson, a all effeithio ar ei ymddangosiad neu ar sut y mae ei gorff neu ei feddwl yn gweithio; caiff pobl anabl (y gellir hefyd cyfeirio atynt fel "pobl anabledig" neu "bobl sy'n cael eu hanablu") eu hanablu gan ffactorau allanol fel yr amgylchedd, polisi neu arferion, neu yn sgil methiant i ddarparu addasiadau ar eu cyfer; ac anabledd yw canlyniad anablu pobl sydd ag amhariadau.

Last Updated: 16 November 2023

English: Certificate of Vision Impairment

Welsh: Tystysgrif Nam ar y Golwg

Status A

Subject: Health

Part of speech: Noun, Feminine, Singular

Definition: CVI. Certificate of a Person as Sight Impaired (partially sighted) or as Severely Sight Impaired (blind).

Notes: "Nam" a ddefnyddir am "impairment" yn nheitl y ddogfen hon, ond "amhariad" sy'n arferol yn ein testunau erbyn hyn. Gweler yr erthygl ar y Model Cymdeithasol o Anabledd yn yr Arddulliadur. Yn unol â'r Model, mae amhariad ("impairment", a elwid yn "nam" o'r blaen) yn nodwedd ar berson, a all effeithio ar ei ymddangosiad neu ar sut y mae ei gorff neu ei feddwl yn gweithio; caiff pobl anabl (y gellir hefyd cyfeirio atynt fel "pobl anabledig" neu "bobl sy'n cael eu hanablu") eu hanablu gan ffactorau allanol fel yr amgylchedd, polisi neu arferion, neu yn sgil methiant i ddarparu addasiadau ar eu cyfer; ac anabledd yw canlyniad anablu pobl sydd ag amhariadau.

Last Updated: 16 November 2023

English: Certificates of Health

Welsh: Tystysgrifau Iechyd

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Definition: Issued by DEFRA for meat, live animals and certain horticultural products.

Last Updated: 26 July 2004

English: Certificates of Health

Welsh: Tystysgrifau Iechyd

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Definition: Issued by DEFRA for meat, live animals and certain horticultural products.

Last Updated: 26 July 2004

English: Certificates of Quality

Welsh: Tystysgrifau Ansawdd

Status C

Subject: Environment

Part of speech: Noun, Plural

Definition: Issued by DEFRA for certain fruits and vegetables.

Last Updated: 26 July 2004

English: Certificates of Quality

Welsh: Tystysgrifau Ansawdd

Status C

Subject: Environment

Part of speech: Noun, Plural

Definition: Issued by DEFRA for certain fruits and vegetables.

Last Updated: 26 July 2004

English: Certification Officer

Welsh: Swyddog Ardystio

Status B

Subject: Politics

Part of speech: Noun, Masculine, Singular

Definition: Swyddog yn Llywodraeth y DU sy'n gyfrifol am sicrhau bod undebau llafur a chymdeithasau gweithwyr yn cyflawni eu dyletswyddau statudol.

Last Updated: 3 July 2025

English: Certification Officer

Welsh: Swyddog Ardystio

Status B

Subject: Politics

Part of speech: Noun, Masculine, Singular

Definition: Swyddog yn Llywodraeth y DU sy'n gyfrifol am sicrhau bod undebau llafur a chymdeithasau gweithwyr yn cyflawni eu dyletswyddau statudol.

Last Updated: 3 July 2025

English: certification scheme

Welsh: cynllun ardystio

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 20 November 2013

English: certification scheme

Welsh: cynllun ardystio

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 20 November 2013

English: certified copy

Welsh: copi ardystiedig

Status B

Subject: Justice and order

Part of speech: Noun, Masculine, Singular

Last Updated: 6 August 2012

English: certified copy

Welsh: copi ardystiedig

Status B

Subject: Justice and order

Part of speech: Noun, Masculine, Singular

Last Updated: 6 August 2012

English: certified expenditure

Welsh: gwariant ardystiedig

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last Updated: 23 October 2003

English: certified expenditure

Welsh: gwariant ardystiedig

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last Updated: 23 October 2003

English: Certified Lactation Consultant

Welsh: Ymgynghorydd Llaetha Ardystiedig

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 2 June 2006

English: Certified Lactation Consultant

Welsh: Ymgynghorydd Llaetha Ardystiedig

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 2 June 2006

English: Certified Organic Farm

Welsh: Fferm Organig Ardystiedig

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Plural: Ffermydd Organig Ardystiedig

Last Updated: 27 February 2024

English: Certified Organic Farm

Welsh: Fferm Organig Ardystiedig

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Plural: Ffermydd Organig Ardystiedig

Last Updated: 27 February 2024

English: certified seed

Welsh: had ardystiedig

Status C

Subject: Environment

Part of speech: Noun, Plural

Last Updated: 29 July 2003

English: certified seed

Welsh: had ardystiedig

Status C

Subject: Environment

Part of speech: Noun, Plural

Last Updated: 29 July 2003

English: certified seed crop

Welsh: cnwd had ardystiedig

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: Cnwd sy’n cael ei dyfu i gynhyrchu had ardystiedig.

Last Updated: 7 April 2009

English: certified seed crop

Welsh: cnwd had ardystiedig

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: Cnwd sy’n cael ei dyfu i gynhyrchu had ardystiedig.

Last Updated: 7 April 2009

English: certify

Welsh: ardystio

Status C

Subject: Planning

Part of speech: Verb

Last Updated: 23 July 2003

English: certify

Welsh: ardystio

Status C

Subject: Planning

Part of speech: Verb

Last Updated: 23 July 2003

English: Certifying Authority Team Manager

Welsh: Rheolwr Tîm yr Awdurdod Ardystio

Status C

Subject: Welsh Government posts and departments

Part of speech: Noun, Masculine, Singular

Last Updated: 20 April 2011

English: Certifying Authority Team Manager

Welsh: Rheolwr Tîm yr Awdurdod Ardystio

Status C

Subject: Welsh Government posts and departments

Part of speech: Noun, Masculine, Singular

Last Updated: 20 April 2011

English: cerumen

Welsh: cwyr clustiau

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 8 September 2020

English: cerumen

Welsh: cwyr clustiau

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 8 September 2020

English: cervical cancer

Welsh: canser serfigol

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Math o ganser sy’n datblygu yng nghelloedd gwddf y groth, gan amlaf yn sgil heintiad hirdymor â’r feirws HPV.

Notes: Mae’r ffurf “canser ceg y groth” yn gyffredin yn Gymraeg hefyd, ond noder mai “gwddf y groth” yw’r term safonol am y “cervix”. Mae defnyddio “canser serfigol” yn Gymraeg yn osgoi defnyddio’r ffurf Gymraeg gyffredin ond camarweiniol, a hefyd yn gyson â thermau cysylltiedig fel “prawf serfigol”.

Last Updated: 1 October 2025

English: cervical cancer

Welsh: canser serfigol

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Math o ganser sy’n datblygu yng nghelloedd gwddf y groth, gan amlaf yn sgil heintiad hirdymor â’r feirws HPV.

Notes: Mae’r ffurf “canser ceg y groth” yn gyffredin yn Gymraeg hefyd, ond noder mai “gwddf y groth” yw’r term safonol am y “cervix”. Mae defnyddio “canser serfigol” yn Gymraeg yn osgoi defnyddio’r ffurf Gymraeg gyffredin ond camarweiniol, a hefyd yn gyson â thermau cysylltiedig fel “prawf serfigol”.

Last Updated: 1 October 2025

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