TermCymru

Results are displayed in English alphabetical order A-Z

Welsh: arwynebedd cymwys mwyaf

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: Yr arwynebedd mwyaf yn y cae sy’n gymwys am y Taliad Sylfaenol, ar ôl tynnu arwynebedd yr holl nodweddion anghymwys o arwynebedd yr holl gae.

Context: Yng nghyd-destun y Taliad Sylfaenol i ffermwyr.

Last Updated: 5 March 2015

English: maximum facilitation

Welsh: hwyluso i’r eithaf

Status B

Subject: Europe

Part of speech: Verb

Definition: Cynnig ar gyfer trefniant tollau rhwng y DU a'r UE ar ôl Brexit.

Context: Deallwyd bod dau opsiwn wedi cael eu trafod – partneriaeth dollau â'r UE ac opsiwn "hwyluso i'r eithaf" neu “maxfac”.

Notes: Weithiau defnyddir y byrfodd 'maxfac' yn y ddwy iaith.

Last Updated: 27 June 2018

English: maximum fair rent

Welsh: uchafswm rhent teg

Status B

Subject: Housing

Part of speech: Noun, Masculine, Singular

Definition: Gwasanaeth y Swyddogion Rhenti

Last Updated: 14 September 2004

English: Maximum Fishing Mortality Threshold

Welsh: Trothwy Uchaf Marwoldeb Pysgota

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: MFMT

Last Updated: 20 March 2013

English: maximum flow rate

Welsh: cyfradd llif uchaf

Status A

Subject: Planning

Part of speech: Noun, Feminine, Singular

Definition: Y gyfradd uchaf y gall nwy lifo allan o gyfleuster, gan dybio bod y cyfleuster wedi ei lenwi'n llawn a bod y gyfradd yn cael ei chyfrifo ar ôl cynnal unrhyw brosesu angenrheidiol ar y nwy wrth ei adfer o'r storfa.

Last Updated: 23 February 2026

English: maximum footnote height

Welsh: mwyafswm uchder troednodyn

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last Updated: 19 July 2005

English: maximum grant co-financing rate

Welsh: terfyn uchaf y gyfradd cydgyllido grantiau

Status C

Subject: Europe

Part of speech: Noun, Masculine, Singular

Last Updated: 12 June 2014

English: maximum gross weight

Welsh: uchafswm pwysau gros

Status B

Subject: Justice and order

Part of speech: Noun, Masculine, Singular

Last Updated: 30 August 2012

English: Maximum Guaranteed Area

Welsh: Uchafswm yr Arwynebedd Gwarantedig

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 19 July 2004

English: maximum laden weight

Welsh: pwysau uchaf gyda llwyth

Status C

Subject: Transport

Part of speech: Noun, Plural

Last Updated: 6 May 2005

English: maximum landing size

Welsh: maint glanio mwyaf

Status A

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: MaxLS

Last Updated: 31 March 2014

English: maximum limit

Welsh: terfyn uchaf

Status A

Subject: Housing

Part of speech: Noun, Masculine, Singular

Context: Help to Buy - Wales

Last Updated: 22 January 2014

English: maximum penalty

Welsh: cosb uchaf

Status A

Subject: Law

Part of speech: Noun, Feminine, Singular

Context: Fines.

Last Updated: 21 October 2014

English: maximum permitted throughput

Welsh: nifer mwyaf a ganiateir

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last Updated: 5 February 2013

English: maximum pesticide residue levels

Welsh: lefelau uchaf o weddillion plaladdwyr

Status C

Subject: Environment

Part of speech: Noun, Plural

Last Updated: 16 November 2005

English: maximum residue level

Welsh: lefel gweddillion uchaf

Status C

Subject: Law

Part of speech: Noun, Feminine, Singular

Plural: lefelau gweddillion uchaf

Definition: MRL

Last Updated: 22 April 2025

English: maximum residue limit

Welsh: terfyn gweddillion uchaf

Status C

Subject: Law

Part of speech: Noun, Masculine, Singular

Plural: terfynau gweddillion uchaf

Definition: Maximum concentration of residue resulting from use of a veterinary medicinal product which may be accepted by the Community to be legally permitted or recognized as acceptable in or on food.

Last Updated: 24 April 2025

English: maximum security prison

Welsh: carchar diogelwch eithaf

Status C

Subject: Justice and order

Part of speech: Noun, Masculine, Singular

Last Updated: 24 January 2011

English: maximum sustainable yield

Welsh: cynnyrch cynaliadwy mwyaf

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Context: Yng nghyd-destun pysgodfeydd

Last Updated: 26 June 2012

English: Maximum Sustainable Yield

Welsh: Cynnyrch Cynaliadawy Mwyaf

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: Y ddalfa flynyddol fwyaf posibl o rywogaeth benodol o bysgod y gellir ei chynnal dros amser, drwy gadw'r stoc ar y lefel sy'n cynnal y twf mwyaf posibl. Dyma'r cyflwr damcaniaethol o gytbwysedd rhwng poblogaeth y rhywogaeth, a'r gweithgaredd pysgota.

Last Updated: 28 February 2019

English: maximum waiting time

Welsh: amser aros hwyaf

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: amseroedd aros hwyaf

Last Updated: 22 April 2025

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

TermCymru

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