TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: rolio stribedi dur cul yn oer
English: cold rolling of narrow strip
Status C
Subject: Economic development
Part of speech: Verb
Last updated: 1 December 2016
Welsh: Roma
English: Roma
Status B
Subject: General
Part of speech: Noun, Masculine, Singular
Definition: Term ymbarél am wahanol grwpiau o Sipsiwn a hunaniaethau ethnig cysylltiedig sy’n draddodiadol nomadig, megis y Sinti.
Last updated: 5 February 2026
Welsh: Romanichal
English: Romanichal
Status B
Subject: General
Part of speech: Noun, Masculine, Singular
Definition: Is-grŵp ethnig o Sipsiwn (Roma).
Notes: Mae’r rhan fwyaf o Sipsiwn Seisnig traddodiadol yn uniaethu fel Romanichal, a cheir cymunedau bychain yn ne a gogledd-ddwyrain Cymru.
Last updated: 4 February 2026
Welsh: Ro-Ro
English: Ro-Ro
Status C
Subject: Environment
Definition: Roll-on Roll-off ferries
Last updated: 20 September 2005
Welsh: rotofetio
English: rotovate
Status C
Subject: Agriculture
Part of speech: Verb
Last updated: 24 November 2009
Welsh: Rough Sleepers Cymru
English: Rough Sleepers Cymru
Status A
Subject: Housing
Part of speech: Proper noun
Last updated: 29 April 2014
Welsh: roundtripping
English: roundtripping
Status C
Subject: Finance and statistics
Definition: pan fydd llywodraeth leol yn cael benthyg arian yn unswydd er mwyn ei fuddsoddi i wneud elw
Last updated: 16 February 2004
Welsh: rowlio
English: roll
Status C
Subject: Agriculture
Part of speech: Verb
Context: Rowlir tir âr i’w galedu cyn ei hau.
Last updated: 24 November 2009
Welsh: rownd
English: round
Status A
Subject: Justice and order
Part of speech: Noun, Feminine, Singular
Plural: rowndiau
Definition: A single volley of fire by artillery or a number of firearms; a shot from a single firearm or piece of artillery.
Notes: Mewn cyd-destunau seremonïol
Last updated: 4 June 2018
Welsh: rownd bwrw allan
English: knock-out round
Status C
Subject: Tourism and leisure
Part of speech: Noun, Feminine, Singular
Plural: rowndiau bwrw allan
Last updated: 13 December 2016
Welsh: Rownd Derfynol Pres Cerddor Ifanc y BBC
English: BBC Young Musician Brass Final
Status C
Subject: Culture and the arts
Part of speech: Noun, Feminine, Singular
Last updated: 12 February 2007
Welsh: RPA
English: RPA
Status A
Subject: Agriculture
Part of speech: Proper noun, Feminine, Singular
Definition: Rural Payments Agency
Context: UK Government agency.
Last updated: 14 June 2004
Welsh: rêp erfin
English: swede rape
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Last updated: 14 August 2003
Welsh: rêp erfin porthiant
English: swede fodder rape
Status C
Subject: Plants
Part of speech: Noun, Masculine, Singular
Last updated: 27 April 2010
Welsh: rêp had olew
English: oilseed rape
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 1 October 2020
Welsh: rêp maip porthiant
English: turnip fodder rape
Status C
Subject: Plants
Part of speech: Noun, Masculine, Singular
Last updated: 27 April 2010
Welsh: RPW Ar-lein
English: RPW Online
Status B
Subject: Agriculture
Part of speech: Proper noun
Last updated: 18 June 2020
Welsh: RSA
English: RSA
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: Regional Selective Assistance
Last updated: 15 June 2004
Welsh: RSA ad-daladwy
English: repayable RSA
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: RSA = Regional Selective Assistance
Last updated: 25 July 2005
Welsh: RSA Cymru Wales
English: RSA Cymru Wales
Status C
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: RSA = Regional Selective Assistance
Last updated: 25 July 2005
Welsh: RSI
English: RSI
Status C
Subject: Health
Definition: Repetitive strain Injury
Last updated: 9 June 2004
Welsh: RSL 32/09: Penderfyniad Cyffredinol Gofynion Cyfrifyddu ar gyfer Landlordiaid Cymdeithasol Cofrestredig (Cymru) 2009
English: RSL 32/09: The Accounting Requirements for Registered Social Landlords General Determination (Wales) 2009
Status C
Subject: Housing
Part of speech: Noun, Masculine, Singular
Definition: Guidance for Registered Social Landlords (RSLs) about preparing financial statements
Last updated: 28 September 2009
Welsh: RSPB
English: RSPB
Status A
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Last updated: 8 December 2022
Welsh: RSPCA
English: RSPCA
Status A
Subject: Agriculture
Part of speech: Noun, Feminine, Singular
Definition: Royal Society for the Prevention of Cruelty to Animals
Last updated: 18 February 2005
Welsh: RSS
English: RSS
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Rural Stress Scheme
Last updated: 7 October 2004
Welsh: RSVP
English: RSVP
Status B
Subject: Personnel
Part of speech: Verb
Notes: Gall fod yn addas defnyddio'r ymadrodd Cymraeg "Ateber erbyn" hefyd.
Last updated: 26 May 2024
Welsh: RSVP
English: RSVP
Status A
Subject: Social services
Part of speech: Noun, Feminine, Singular
Definition: Retired and Senior Volunteer Programme
Last updated: 24 November 2003
Welsh: RT
English: RT
Status A
Subject: ICT
Part of speech: Verb
Definition: re-tweet
Context: Defnyddir "AD" ac "Ail-drydarwch" hefyd.
Last updated: 3 December 2012
Welsh: Rt
English: Rt
Status A
Subject: Health
Definition: Ym maes epidemioleg, dynodiad gwyddonol y gyfradd y mae clefyd yn cael ei drosglwyddo arni o fewn poblogaeth (R) dros amser (t).
Notes: Gweler y cofnod am R value / gwerth R yn TermCymru.
Last updated: 13 July 2020
Welsh: RTEF
English: RTEF
Status A
Subject: Tourism and leisure
Part of speech: Noun, Feminine, Singular
Notes: Dyma'r acronym ar gyfer y Regional Tourism Engagement Fund / Cronfa Ymgysylltu Twristiaeth Ranbarthol.
Last updated: 14 September 2016
Welsh: Rudbaxton a Spittal
English: Rudbaxton and Spittal
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Sir Benfro. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Sir Benfro (Trefniadau Etholiadol) 2021.
Last updated: 17 August 2022
Welsh: Réunion
English: Réunion
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
Welsh: rutherfordiwm
English: rutherfordium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Rf
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: Rutland
English: Rutland
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Enw sir yn Lloegr. Safonwyd y ffurf hon gan Banel Safoni Enwau Lleoedd Comisiynydd y Gymraeg fel rhan o restr o siroedd Lloegr. Am ragor o wybodaeth am y prosiect safoni hwn, gweler gwefan Comisiynydd y Gymraeg.
Last updated: 17 June 2025
Welsh: ruw'r geifr
English: goat's rue
Status A
Subject: Plants
Part of speech: Noun, Masculine, Singular
Definition: Galega officinalis
Last updated: 12 November 2024
Welsh: Rwanda
English: Rwanda
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
Welsh: rwbel
English: rubble stone
Status C
Subject: Estates and Cadw
Part of speech: Noun, Masculine, Singular
Definition: Irregularly shaped, rough textured stone.
Last updated: 1 November 2010
Welsh: rwbela
English: rubella
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Context: Also known as "German measles".
Last updated: 8 November 2004
Welsh: rwbidiwm
English: rubidium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Rb
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: rwden/sweden
English: swede
Status B
Subject: Food
Part of speech: Noun, Feminine, Singular
Definition: vegetable
Context: Defnyddir termau gwahanol yn ne a gogledd Cymru.
Last updated: 14 August 2003
Welsh: Rwmanaidd
English: Romanian
Status C
Subject: Personnel
Part of speech: Adjective
Context: A person from Romania.
Last updated: 5 July 2010
Welsh: Rwmaneg
English: Romanian
Status C
Subject: Personnel
Part of speech: Noun, Feminine, Singular
Context: The Romanian language.
Last updated: 5 July 2010
Welsh: Rwmania
English: Romania
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
Welsh: Rwseg
English: Russian
Status C
Subject: Culture and the arts
Part of speech: Noun, Feminine, Singular
Definition: language
Last updated: 20 September 2005
Welsh: Rwsia
English: Russia
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
Welsh: Rwsiaidd
English: Russian
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Last updated: 9 July 2008
Welsh: rwtheniwm
English: ruthenium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Ru
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: Rwy'n Gall am y Môr
English: I'm Sea Smart
Status C
Subject: Tourism and leisure
Part of speech: Neutral
Last updated: 11 June 2007
Welsh: Rydych chi yma
English: You are here
Status C
Subject: Place-names
Last updated: 28 September 2005
Welsh: Rydym yn Dysgu Sut Mae ...
English: We are Learning To ...
Status A
Part of speech: Verb
Definition: WALT
Last updated: 2 July 2014