TermCymru

Results are displayed in English alphabetical order A-Z

English: DBT

Welsh: Therapi Ymddygiad Dialectig

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Dialectical Behaviour Therapy

Last Updated: 21 September 2012

English: DBT

Welsh: Yr Adran Fusnes a Masnach

Status B

Subject: Politics

Part of speech: Noun, Feminine, Singular

Notes: Adran yn Llywodraeth y Deyrnas Unedig. DBT yw'r acronym ar gyfer 'Department of Business and Trade'.

Last Updated: 25 September 2025

English: DCA

Welsh: Diploma mewn Materion Defnyddwyr

Status C

Subject: Education

Part of speech: Noun, Feminine, Singular

Definition: Diploma in Consumer Affairs

Last Updated: 2 July 2008

English: DCA

Welsh: AMC

Status A

Subject: Justice and order

Part of speech: Noun, Feminine, Singular

Definition: Department for Constitutional Affairs

Last Updated: 5 November 2007

English: D/C borderline

Welsh: y ffin rhwng gradd C a gradd D

Status B

Subject: Education

Part of speech: Noun, Feminine, Singular

Last Updated: 14 December 2011

English: DCD

Welsh: rhoi organau yn dilyn marwolaeth gylchredol

Status C

Subject: Health

Part of speech: Verb

Context: Mae'r gyfradd cydsynio i roi organau yn dilyn marwolaeth gylchredol yng Nghymru hefyd wedi gwella ac mae'n 68% erbyn hyn, o'i gymharu â 59.8% yn Lloegr.

Last Updated: 29 November 2018

English: DCELLS

Welsh: APADGOS

Status A

Subject: Welsh Government posts and departments

Part of speech: Noun, Feminine, Singular

Definition: Department for Children, Education, Lifelong Learning and Skills

Last Updated: 6 August 2007

English: DCfW

Welsh: Comisiwn Dylunio Cymru

Status A

Subject: Planning

Part of speech: Noun, Masculine, Singular

Definition: Design Commission for Wales

Last Updated: 10 January 2008

English: DCLG

Welsh: Yr Adran Cymunedau a Llywodraeth Leol

Status A

Subject: Local government

Part of speech: Noun, Feminine, Singular

Definition: Department for Communities and Local Government

Last Updated: 10 May 2006

English: DCMO

Welsh: Dirprwy Brif Swyddog Meddygol

Status C

Subject: Welsh Government posts and departments

Part of speech: Noun, Masculine, Singular

Definition: Deputy Chief Medical Officer

Last Updated: 3 April 2009

English: DCMS

Welsh: Yr Adran dros Dechnoleg Ddigidol, Diwylliant, y Cyfryngau a Chwaraeon

Status B

Subject: Welsh Government posts and departments

Part of speech: Noun, Feminine, Singular

Definition: Department for Culture, Media and Sport

Notes: Dyma’r acronym cyfredol am the Department for Digital, Culture, Media and Sport, a sefydlwyd yn 2017. Defnyddid yr un acronym ar gyfer yr adran flaenorol, sef the Department for Culture, Media and Sport.

Last Updated: 20 February 2020

English: DCN

Welsh: HRhC

Status A

Subject: Law

Part of speech: Noun, Masculine, Singular

Definition: Dog Control Notice

Last Updated: 16 January 2013

English: DCO

Welsh: DCO

Status C

Subject: Personnel

Definition: Designated Complaints Officer

Last Updated: 14 June 2004

English: DCO

Welsh: Gorchymyn Cydsyniad Datblygu

Status B

Subject: Law

Part of speech: Noun, Masculine, Singular

Plural: Gorchmynion Cydsyniad Datblygu

Last Updated: 23 March 2021

English: DCP

Welsh: Gweithiwr Proffesiynol Gofal Deintyddol

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: Gweithwyr Proffesiynol Gofal Deintyddol

Notes: Dyma'r acronym Saesneg a ddefnyddir am Dental Care Professional

Last Updated: 6 May 2020

English: DCSF

Welsh: Yr Adran Plant, Ysgolion a Theuluoedd

Status A

Subject: Politics

Part of speech: Noun, Feminine, Singular

Context: Department for Children, Schools and Families. UK Government department; changed to the "Department for Education" in 2010.

Last Updated: 6 July 2007

English: DDA

Welsh: Deddf Gwahaniaethu ar sail Anabledd

Status B

Subject: Personnel

Part of speech: Noun, Feminine, Singular

Definition: Disability Discrimination Act

Notes: 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: 14 November 2023

English: DDaT

Welsh: Digidol, Data a Thechnoleg

Status A

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last Updated: 6 May 2021

English: DDC

Welsh: Canolfan Datblygu Llaeth

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Definition: Dairy Development Centre

Last Updated: 8 August 2007

English: D/deaf

Welsh: B/byddar

Status B

Subject: Health

Part of speech: Adjective

Definition: "D/deaf” is a term used to cover all people with some type of deafness and includes those who are partially deaf and profoundly deaf.This last group of profoundly deaf people can be further subdivided into (i) ‘deaf’ people, with a lower-case ‘d’, who are born profoundly deaf but choose to use speech and lip-reading and regard English or Welsh as their first language, and (ii) ‘Deaf’ people, with a capital ‘D’, who use British Sign Language as their first or preferred language. They regard themselves as a linguistic and cultural minority and have a separate ‘Deaf Culture’ and a thriving deaf Community.

Context: Bydd eu gwybodaeth leol am wasanaethau a chymorth yn help i ddod o hyd i atebion mwy effeithiol er mwyn mynd i’r afael â heriau lleol ac er mwyn darparu gwasanaethau i bobl sy’n F/fyddar neu sy’n drwm eu clyw.

Last Updated: 9 June 2016

English: dd/mm/yyyy

Welsh: dd/mm/bbbb

Status C

Subject: Personnel

Last Updated: 28 November 2007

English: DDO

Welsh: Gorchymyn Didynnu Uniongyrchol

Status B

Subject: Law

Part of speech: Noun, Masculine, Singular

Plural: Gorchmynion Didynnu Uniongyrchol

Notes: Dyma’r acronym Saesneg a ddefnyddir am Direct Deduction Order.

Last Updated: 6 February 2025

English: DDoS attack

Welsh: ymosodiad Atal Gwasanaeth Gwasgaredig

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Plural: ymosodiadau atal gwasanaeth gwasgaredig

Definition: Math o ymosodiad seiber lle caiff gwasanaeth ar-lein ei orlwytho gan nifer fawr o geisiadau ar yr un pryd, gan ei gwneud yn amhosibl i ddefnyddwyr cyfreithlon gael mynediad.

Notes: Dyma’r ffurf fer ar y term Saesneg ‘Distributed Denial of Service attack’.

Last Updated: 13 November 2025

English: DDP

Welsh: Danfonwyd â'r Tollau wedi eu Talu

Status A

Subject: Finance and statistics

Part of speech: Adjective

Definition: Categori a ddefnyddir pan fydd gwerthwr sy'n allforio yn cyflawni ei gyfrifoldebau pan fydd nwyddau wedi eu gosod mewn man penodol a'u clirio ar gyfer eu mewnforio. Y gwerthwr sy'n ysgwyddo holl gostau a risgiau cludo'r nwyddau i'r man a enwyd, a'u clirio nid yn unig ar gyfer allforio ond ar gyfer eu mewnforio hefyd. Mae hyn yn cynnwys talu'r holl drethi ar gyfer allforio a mewnforio, a llenwi'r holl ffurflenni tollau.

Notes: Dyma'r acronym Saesneg a ddefnyddir am Delivered Duty Paid

Last Updated: 10 June 2021

English: DDRB

Welsh: Y Corff Adolygu Meddygon a Deintyddion

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Doctors’ and Dentists’ Review Body

Last Updated: 28 October 2010

English: DDRS

Welsh: Cynllun Adsefydlu Gyrwyr sy'n Yfed

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Drink Drive Rehabilitation Scheme

Last Updated: 2 April 2012

English: deactivate

Welsh: analluogi

Status B

Subject: ICT

Part of speech: Verb

Notes: Yng nghyd-destun cyfrifon ar-lein.

Last Updated: 5 March 2025

English: dead-end host

Welsh: organeb letyol derfynol

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

English: deadline

Welsh: dyddiad cau

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 29 July 2003

English: deadnaming

Welsh: camenwi

Status B

Subject: General

Part of speech: Verb

Definition: Cyfeirio at berson trawsryweddol gan ddefnyddio enw a ddefnyddid gan y person cyn trawsnewid, ee enw genedigol y person.

Last Updated: 1 May 2024

English: deadweight

Welsh: pwysau marw

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: The weight of an animal after it has been slaughtered and prepared as a carcass.

Last Updated: 5 November 2003

English: deadweight

Welsh: difuddiant

Status C

Subject: Europe

Part of speech: Noun, Masculine, Singular

Definition: A measure of inefficiency .

Last Updated: 6 November 2003

English: deadweight

Welsh: diffrwythedd

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Definition: ‘Deadweight’ refers to outcomes which would have occurred without intervention. Its scale can be estimated by assessing what would have happened in the ‘do minimum’ case, ensuring that due allowance is made for the other impacts which impact on net additionality.

Last Updated: 8 July 2016

English: deadweight loss

Welsh: colled ddifuddiant

Status C

Subject: Finance and statistics

Part of speech: Noun, Feminine, Singular

Last Updated: 17 March 2009

English: deadweight tonnage

Welsh: tunelledd llwyth

Status C

Subject: Economic development

Part of speech: Noun, Masculine, Singular

Last Updated: 5 November 2003

English: dead wood

Welsh: coeden farw

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Coeden sydd wedi marw; cynefin gwerthfawr.

Last Updated: 3 December 2012

English: dead wood

Welsh: pren marw

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: Rhannau marw ar goeden sy'n dal yn fyw; cynefin gwerthfawr.

Last Updated: 3 December 2012

English: Deaf Awareness Week

Welsh: Wythnos Ymwybyddiaeth o fod yn Fyddar

Status C

Subject: Health

Part of speech: Noun, Feminine, Singular

Last Updated: 10 May 2011

English: deafblind

Welsh: dall fyddar

Status B

Subject: Health

Part of speech: Adjective

Last Updated: 20 February 2020

English: Deafblind Awareness Week

Welsh: Wythnos Ymwybyddiaeth o fod yn Ddall ac yn Fyddar

Status C

Subject: Health

Part of speech: Noun, Feminine, Singular

Last Updated: 10 May 2011

English: deafblindness

Welsh: dallfyddardod

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Y cyflwr o fod â namau difrifol ar y golwg a'r clyw ar y cyd, gan arwain at anawsterau â chyfathrebu a symud.

Last Updated: 20 February 2020

English: deaf BSL signer

Welsh: arwyddwr BSL byddar

Status B

Subject: Culture and the arts

Part of speech: Noun, Masculine, Singular

Plural: arwyddwyr BSL byddar

Definition: Un sy’n gallu cyfathrebu gan ddefnyddio iaith arwyddion Prydain, ac sy’n fyddar.

Notes: Ni ddylid defnyddio’r ffurf ‘defnyddiwr BSL byddar’ (‘deaf BSL user’).

Last Updated: 28 January 2026

English: deafened people

Welsh: pobl sydd wedi colli eu clyw

Status C

Subject: Health

Part of speech: Noun, Plural

Last Updated: 6 January 2011

English: deaf people

Welsh: pobl fyddar

Status B

Subject: Personnel

Part of speech: Noun, Plural

Definition: Dim "y byddar" hyd yn oed os ceir the deaf yn Saesneg. Os defnyddir 'Deaf' gyda 'D' fawr bydd angen defnyddio'r briflythyren yn y Gymraeg hefyd am nad yw'n cyfeirio at y cyflwr meddygol ond yn hytrach at yr holl ddiwylliant sydd wedi tyfu o gwmpas iaith arwyddion ac ati.

Last Updated: 21 January 2003

English: dealcoholised

Welsh: wedi ei ddadalcoholeiddio

Status B

Subject: Food

Part of speech: Adjective

Notes: Disgrifydd ar labeli diodydd

Last Updated: 1 August 2018

English: Dealing with Challenging Behaviour in After School Groups and Workshops

Welsh: Delio â Phlant sy'n Ymddwyn yn Anodd mewn Grwpiau a Gweithdai ar ôl Ysgol

Status C

Subject: Education

Part of speech: Verb

Last Updated: 8 December 2004

English: Dealing with Disaster

Welsh: Dealing with Disaster

Status C

Subject: Fire and rescue

Definition: A Home Office publication, provides the strategic framework for integrated emergency planning.

Last Updated: 15 July 2002

English: Dealing with hate crime

Welsh: Delio â throseddau casineb

Status A

Subject: Justice and order

Part of speech: Proper noun

Definition: Slogan marchnata.

Last Updated: 4 December 2013

English: Dean

Welsh: Deon

Status C

Subject: Personnel

Part of speech: Noun, Masculine, Singular

Last Updated: 31 May 2006

English: Dean

Welsh: Deon

Status B

Subject: Religion

Part of speech: Noun, Masculine, Singular

Plural: Deoniaid

Definition: Pennaeth y canoniaid mewn Eglwys Gadeiriol.

Last Updated: 13 August 2020

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