TermCymru

Results are displayed in English alphabetical order A-Z
English: MaxLS
Welsh: maint glanio mwyaf
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: maximum landing size
Last Updated: 31 March 2014
English: Mayals
Welsh: Mayals
Status A
Subject: Place-names
Part of speech: Proper noun
Definition: Abertawe
Last Updated: 14 August 2003
English: Mayals
Welsh: Mayals
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Ninas a Sir Abertawe. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Dinas a Sir Abertawe (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: May Bank Holiday
Welsh: Gŵyl Banc Calan Mai
Status B
Subject: Tourism and leisure
Part of speech: Noun, Masculine, Singular
Last Updated: 9 April 2020
English: May Day
Welsh: Calan Mai
Status A
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Last Updated: 20 February 2006
English: Mayer's 12 principles of multimedia learning
Welsh: 12 egwyddor Mayer ar gyfer dysgu amlgyfrwng
Status B
Subject: Education
Part of speech: Noun, Feminine, Singular
Last Updated: 10 December 2020
English: may fall within the civil regime of market abuse
Welsh: yn gyfystyr â thramgwydd sifil, sef camddefnyddio'r farchnad
Status C
Subject: Economic development
Last Updated: 9 January 2003
English: May I have it?
Welsh: Rho hi i mi!
Status C
Subject: Health
Part of speech: Neutral
Definition: For a promotional flyer for a 'Freedom of Information' conference, organised by NHS Wales
Last Updated: 19 March 2003
English: mayor
Welsh: maer
Status C
Subject: Local government
Part of speech: Noun, Masculine, Singular
Last Updated: 20 June 2012
English: Mayor and Cabinet Executive
Welsh: Gweithrediaeth Maer a Chyngor
Status C
Subject: Local government
Part of speech: Noun, Feminine, Singular
Last Updated: 2 November 2010
English: mayor and cabinet executive
Welsh: gweithrediaeth maer a chabinet
Status A
Subject: Local government
Part of speech: Noun, Feminine, Singular
Plural: gweithrediaethau maer a chabinet
Context: Pan fo cyngor yn gweithredu trefniadau gweithrediaeth sy’n cynnwys gweithrediaeth maer a chabinet, mae is-adran (4) yn pennu bod unrhyw gyfeiriad at aelod o gyngor sir yn y rhestr yn is-adran (2) yn cynnwys cyfeiriad at faer etholedig y cyngor.
Last Updated: 20 June 2018
English: Mayotte
Welsh: Mayotte
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Safonwyd yr enw hwn gan ddilyn yr egwyddorion a nodir yn yr erthygl 'Dynodi enwau gwladwriaethau, tiriogaethau a chenhedloedd diwladwriaeth' yn yr Arddulliadur.
Last Updated: 17 August 2021
English: maze
Welsh: drysfa
Status C
Subject: Education
Last Updated: 14 June 2004
English: MB
Welsh: Briff i'r Gweinidog
Status A
Subject: Politics
Part of speech: Noun, Masculine, Singular
Definition: Ministerial Briefing
Context: Gellir defnyddio "Briff y Gweinidog" hefyd.
Last Updated: 15 July 2005
English: MBA
Welsh: MBA
Status C
Subject: Personnel
Definition: Master of Business Administration
Last Updated: 21 October 2009
English: MBC
Welsh: Cyngor Bwrdeistref Fetropolitanaidd
Status A
Subject: Local government
Part of speech: Noun, Masculine, Singular
Definition: Metropolitan Borough Council
Context: Type of council in England; also known as a "metropolitan district".
Last Updated: 3 September 2014
English: MBE
Welsh: MBE
Status A
Subject: Honorary titles
Part of speech: Neutral
Definition: Member of the British Empire
Last Updated: 15 March 2004
English: MBI
Welsh: pryniant gan reolwyr cwmni allanol
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym a ddefnyddir yn Saesneg am 'management buy-in'.
Last Updated: 5 March 2020
English: MBO
Welsh: pryniant gan y rheolwyr
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym a ddefnyddir yn Saesneg am 'management buyout'.
Last Updated: 5 March 2020
English: Mbps
Welsh: Mbps
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Definition: Cyfradd drosglwyddo data o 1 miliwn did fesul eiliad.
Notes: Dyma'r acronym a ddefnyddir am megabit per second / megadid yr eiliad. Sylwer mai llythyren fawr yw 'M' yn y byrfodd hwn.
Last Updated: 15 December 2022
English: MBTI
Welsh: Dangosydd Math Myers-Briggs
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Definition: Myers-Briggs Type Inventory. An instrument for measuring a person's preferences, using four basic scales with opposite poles. It is used to improve individual and team performance, nurture talent, develop leadership etc.
Last Updated: 13 July 2006
English: MBU
Welsh: gwneud defnydd gwell o
Status C
Subject: Transport
Part of speech: Verb
Definition: making better use
Last Updated: 31 May 2006
English: MB Wales
Welsh: Beicio Mynydd Cymru
Status A
Subject: Tourism and leisure
Part of speech: Proper noun
Definition: Mountain Biking Wales
Context: Visit Wales website
Last Updated: 27 February 2014
English: MCA
Welsh: Asiantaeth y Môr a Gwylwyr y Glannau
Status C
Subject: Fire and rescue
Part of speech: Noun, Feminine, Singular
Definition: Maritime and Coastguard Agency
Last Updated: 22 November 2006
English: McCloud remedy
Welsh: rhwymedi McCloud
Status B
Subject: Law
Part of speech: Noun, Masculine, Singular
Definition: Dyfarniad yn y Llys Apêl yn 2018 yn achos yr Arglwydd Ganghellor v McCloud bod y cynlluniau pensiwn a gyflwynodd Llywodraeth y DU i'r sector cyhoeddus yn 2015 yn gwahaniaethu’n anghyfreithlon yn erbyn aelodau iau y cynlluniau pensiwn hynny. Mae'r dyfarniad hefyd yn gosod canllawiau ar gyfer unioni'r sefyllfa.
Last Updated: 19 October 2023
English: MCHPA
Welsh: Gwobrau'r Bartneriaeth Iechyd rhwng y Fyddin a Sifiliaid
Status C
Subject: Health
Part of speech: Noun, Plural
Definition: Military and Civilian Health Partnership Awards
Last Updated: 17 November 2011
English: MCHW
Welsh: Llawlyfr Dogfennau Contract ar gyfer Gwaith Priffyrdd
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: Manual of Contract Documents for Highway Works
Last Updated: 2 January 2013
English: MCI
Welsh: nam gwybyddol ysgafn
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last Updated: 17 September 2020
English: MCIPS
Welsh: Aelod o’r Sefydliad Siartredig Caffael a Chyflenwi
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: Member of the Chartered Institute of Procurement and Supply
Notes: Dyma’r acronym Saesneg a ddefnyddir am Member of the Chartered Institute of Procurement and Supply.
Last Updated: 29 August 2025
English: MCN
Welsh: Rhwydwaith Clinigol a Reolir
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: Rhwydweithiau Clinigol a Reolir
Notes: DYma'r acronym Saesneg a ddefnyddir am Managed Clinical Network.
Last Updated: 24 April 2025
English: MCO
Welsh: Swyddog Mapiau a Siartiau
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Definition: Mapping and Charting Officer
Last Updated: 15 July 2005
English: MCRS
Welsh: MCRS
Status C
Subject: Agriculture
Part of speech: Noun, Masculine
Notes: Dyma'r acronym a ddefnyddir yn y ddwy iaith am Minimum Conservation Reference Size / Maint Cyfeirio Cadwraethol Lleiaf
Last Updated: 9 March 2017
English: MCS
Welsh: MCS
Status C
Subject: Health
Definition: Mental Component Summary
Last Updated: 3 March 2006
English: MCS
Welsh: Cynllun Tystysgrifau Microgynhyrchu
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Microgeneration Certification Scheme
Last Updated: 15 July 2011
English: MCS
Welsh: Astudiaeth Carfan y Mileniwm
Status C
Subject: Finance and statistics
Part of speech: Proper noun, Feminine, Singular
Definition: Millennium Cohort Study is a research project following the lives of around 19,000 children born in the UK in 2000/1 (2,799 in Wales). The study has tracked the Millennium children through their early childhood years and is intended to follow them into adulthood.
Last Updated: 9 May 2012
English: MCS Installer Support Programme
Welsh: Rhaglen Gymorth i Osod MCS
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Definition: Enables small and medium sized renewable energy installation companies to access interest free loans to cover the cost of gaining industry certification.
Last Updated: 17 November 2011
English: M Current Main (dual registration - main establishment)
Welsh: M Prif Sefydliad Cyfredol (cofrestriad deuol - prif sefydliad)
Status C
Subject: Education
Last Updated: 27 March 2008
English: MCZ
Welsh: Parth Cadwraeth Morol
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Marine Conservation Zone
Last Updated: 25 April 2012
English: MDA
Welsh: Cymdeithas Ddogfennaeth yr Amgueddfeydd/MDA
Status C
Subject: Culture and the arts
Part of speech: Neutral
Definition: Museums Documentation Association
Last Updated: 10 November 2004
English: MDA
Welsh: Cynghrair Mersi a'r Ddyfrdwy
Status A
Subject: Economic development
Part of speech: Proper noun, Feminine, Singular
Definition: The Mersey Dee Alliance (MDA) was born out of the recognition of shared economic, social and environmental interests across the West Cheshire, Wirral and North East Wales area.
Context: Yr enw swyddogol ar eu gwefan.
Last Updated: 12 July 2012
English: MDC
Welsh: Y Cyngor Datblygu Llaeth
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Milk Development Council
Last Updated: 10 August 2010
English: MDCC
Welsh: Dyfeisiau Meddygol a Deunyddiau Traul Clinigol
Status B
Subject: Health
Part of speech: Noun, Plural
Notes: Dyma'r acronym a ddefnyddir yn Saesneg am Medical Devices and Clinical Consumables.
Last Updated: 23 December 2020
English: MDF
Welsh: MDF
Status C
Subject: Health
Part of speech: Noun, Feminine, Singular
Definition: Manic Depression Fellowship
Last Updated: 13 May 2008
English: MDO
Welsh: sefydliad amddiffyn meddygol
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am medical defence organisation / sefydliad amddiffyn meddygol.
Last Updated: 12 March 2020
English: MDR TB
Welsh: TB ag ymwrthedd i’r prif gyffuriau
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Dyma'r acronym Saesneg a ddefnyddir am 'multi-drug resistant TB'. Gweler cofnod y term llawn am ddiffiniad.
Last Updated: 19 May 2022
English: MDT
Welsh: y tîm amlddisgyblaethol
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Definition: multidisciplinary team
Last Updated: 4 February 2013
English: ME
Welsh: ME
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Myalgic Encephalopathy
Last Updated: 24 March 2004
English: meadow
Welsh: gweirglodd/dôl
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last Updated: 29 July 2003
English: meadow barley
Welsh: haidd y maes
Status A
Subject: Plants
Part of speech: Noun, Masculine, Singular
Definition: hordeum secalinum
Last Updated: 21 June 2022
English: meadow brown
Welsh: gweirlöyn y ddôl
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Type of butterfly.
Last Updated: 22 March 2021