TermCymru

Results are displayed in English alphabetical order A-Z
English: Ystadau Cymru
Welsh: Ystadau Cymru
Status A
Subject: Estates and Cadw
Part of speech: Proper noun
Notes: Rhwydwaith o unigolion sy'n gweithio ym maes Ystadau yn y sector cyhoeddus yng Nghymru.
Last Updated: 7 October 2021
English: Ystadau Cymru
Welsh: Ystadau Cymru
Status A
Subject: Estates and Cadw
Part of speech: Proper noun
Notes: Rhwydwaith o unigolion sy'n gweithio ym maes Ystadau yn y sector cyhoeddus yng Nghymru.
Last Updated: 7 October 2021
English: Ystalyfera
Welsh: Ystalyfera
Status A
Subject: Place-names
Part of speech: Proper noun
Last Updated: 2 August 2010
English: Ystalyfera
Welsh: Ystalyfera
Status A
Subject: Place-names
Part of speech: Proper noun
Last Updated: 2 August 2010
English: Ystrad
Welsh: Ystrad
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Rhondda Cynon Taf. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Rhondda Cynon Taf (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: Ystrad
Welsh: Ystrad
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Rhondda Cynon Taf. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Rhondda Cynon Taf (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: Ystrad Mynach
Welsh: Ystrad Mynach
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Caerffili. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Caerffili (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: Ystrad Mynach
Welsh: Ystrad Mynach
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol ym Mwrdeistref Sirol Caerffili. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Caerffili (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: Ystrad Mynach College
Welsh: Coleg Ystrad Mynach
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last Updated: 28 November 2007
English: Ystrad Mynach College
Welsh: Coleg Ystrad Mynach
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last Updated: 28 November 2007
English: Ystwyth
Welsh: Ystwyth
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Sir Ceredigion. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Sir Ceredigion (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: Ystwyth
Welsh: Ystwyth
Status A
Subject: Place-names
Part of speech: Proper noun
Notes: Ward etholiadol yn Sir Ceredigion. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Sir Ceredigion (Trefniadau Etholiadol) 2021.
Last Updated: 17 August 2022
English: ytterbium
Welsh: yterbiwm
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Yb
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last Updated: 18 June 2025
English: ytterbium
Welsh: yterbiwm
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Yb
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last Updated: 18 June 2025
English: yttrium
Welsh: ytriwm
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Y
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last Updated: 18 June 2025
English: yttrium
Welsh: ytriwm
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Y
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last Updated: 18 June 2025
English: Yugoslavia
Welsh: Iwgoslafia
Status B
Subject: Place-names
Part of speech: Proper noun
Last Updated: 9 September 2003
English: Yugoslavia
Welsh: Iwgoslafia
Status B
Subject: Place-names
Part of speech: Proper noun
Last Updated: 9 September 2003
English: YVA
Welsh: Cynghorydd Gwirfoddoli Ieuenctid
Status C
Subject: Social services
Part of speech: Noun, Masculine, Singular
Definition: Youth Volunteering Advisor
Last Updated: 20 June 2012
English: YVA
Welsh: Cynghorydd Gwirfoddoli Ieuenctid
Status C
Subject: Social services
Part of speech: Noun, Masculine, Singular
Definition: Youth Volunteering Advisor
Last Updated: 20 June 2012
English: YWCA
Welsh: Cymdeithas Gristnogol Menywod Ifanc
Status C
Subject: Social services
Part of speech: Noun, Feminine, Singular
Last Updated: 31 August 2010
English: YWCA
Welsh: Cymdeithas Gristnogol Menywod Ifanc
Status C
Subject: Social services
Part of speech: Noun, Feminine, Singular
Last Updated: 31 August 2010
English: Zambia
Welsh: Zambia
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: Zambia
Welsh: Zambia
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: zanamivir
Welsh: sanamifir
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Cyffur gwrthfeirysol a ddefnyddir i atal a thrin ffliw mewn unigolion sy’n rhan o grwpiau risg.
Last Updated: 6 November 2025
English: zanamivir
Welsh: sanamifir
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Cyffur gwrthfeirysol a ddefnyddir i atal a thrin ffliw mewn unigolion sy’n rhan o grwpiau risg.
Last Updated: 6 November 2025
English: zander
Welsh: draenogiaid cegfawr
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Definition: fish
Last Updated: 5 September 2003
English: zander
Welsh: draenogiaid cegfawr
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Definition: fish
Last Updated: 5 September 2003
English: zebra crossing
Welsh: croesfan sebra
Status A
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last Updated: 2 April 2013
English: zebra crossing
Welsh: croesfan sebra
Status A
Subject: Transport
Part of speech: Noun, Feminine, Singular
Last Updated: 2 April 2013
English: zebra finch
Welsh: gwehydd rhesog
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Yng nghyd-destun ffliw adar.
Last Updated: 16 November 2005
English: zebra finch
Welsh: gwehydd rhesog
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Yng nghyd-destun ffliw adar.
Last Updated: 16 November 2005
English: zebra hatching
Welsh: llinellau sebra
Status A
Subject: Law
Part of speech: Noun, Plural
Definition: cyfres o linellau rhesog du a gwyn ar blan
Context: Darn o briffordd (troetffordd) yn Knighton Court sy’n arwain at Galston Street o Constellation Street, Adamsdown, Caerdydd, sy’n 18 o fetrau yn y man hiraf ac yn 2 fetr yn y man lletaf, y rhoddir y cyfeirnod ‘A’ iddo ac a ddangosir â llinellau sebra ar y planiau a adneuwyd (Plan A).
Last Updated: 14 September 2021
English: zebra hatching
Welsh: llinellau sebra
Status A
Subject: Law
Part of speech: Noun, Plural
Definition: cyfres o linellau rhesog du a gwyn ar blan
Context: Darn o briffordd (troetffordd) yn Knighton Court sy’n arwain at Galston Street o Constellation Street, Adamsdown, Caerdydd, sy’n 18 o fetrau yn y man hiraf ac yn 2 fetr yn y man lletaf, y rhoddir y cyfeirnod ‘A’ iddo ac a ddangosir â llinellau sebra ar y planiau a adneuwyd (Plan A).
Last Updated: 14 September 2021
English: zebra stripes
Welsh: streipiau sebra
Status A
Subject: Agriculture
Part of speech: Adjective
Definition: Horse markings
Last Updated: 29 April 2005
English: zebra stripes
Welsh: streipiau sebra
Status A
Subject: Agriculture
Part of speech: Adjective
Definition: Horse markings
Last Updated: 29 April 2005
English: zero-based budgeting
Welsh: cyllidebu sylfaen sero
Status B
Subject: Finance and statistics
Part of speech: Verb
Definition: Dull o gyllidebu lle mae'n rhaid cyfiawnhau'r holl gostau ar gyfer pob cyfnod cyllidebu newydd. Mae'r broses o gyllidebu yn cychwyn ar "sylfaen sero" bob tro, ac yna gwneir dadansoddiad o anghenion a chostau pob elfen. Ar sail y dadansoddiad hwn, mae'r gyllideb yn cael ei phennu ar sail yr anghenion am y cyfnod cyllidebu a ddaw, heb ystyried a ydy'r gyllideb honno yn is neu'n uwch na'r un ar gyfer y cyfnod cyllidebu o'i blaen.
Last Updated: 13 January 2022
English: zero-based budgeting
Welsh: cyllidebu sylfaen sero
Status B
Subject: Finance and statistics
Part of speech: Verb
Definition: Dull o gyllidebu lle mae'n rhaid cyfiawnhau'r holl gostau ar gyfer pob cyfnod cyllidebu newydd. Mae'r broses o gyllidebu yn cychwyn ar "sylfaen sero" bob tro, ac yna gwneir dadansoddiad o anghenion a chostau pob elfen. Ar sail y dadansoddiad hwn, mae'r gyllideb yn cael ei phennu ar sail yr anghenion am y cyfnod cyllidebu a ddaw, heb ystyried a ydy'r gyllideb honno yn is neu'n uwch na'r un ar gyfer y cyfnod cyllidebu o'i blaen.
Last Updated: 13 January 2022
English: Zero Based Review
Welsh: Adolygiad Cwbl Gynhwysfawr
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: Adolygiad sy'n edrych ar holl wariant corff neu adran, heb unrhyw ragdybiaethau ynghylch pa gostau sy'n hanfodol ai peidio.
Last Updated: 4 June 2018
English: Zero Based Review
Welsh: Adolygiad Cwbl Gynhwysfawr
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: Adolygiad sy'n edrych ar holl wariant corff neu adran, heb unrhyw ragdybiaethau ynghylch pa gostau sy'n hanfodol ai peidio.
Last Updated: 4 June 2018
English: zero carbon
Welsh: di-garbon
Status C
Subject: Environment
Part of speech: Adjective
Last Updated: 13 September 2007
English: zero carbon
Welsh: di-garbon
Status C
Subject: Environment
Part of speech: Adjective
Last Updated: 13 September 2007
English: zero carbon economy
Welsh: economi ddi-garbon
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last Updated: 19 November 2020
English: zero carbon economy
Welsh: economi ddi-garbon
Status B
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last Updated: 19 November 2020
English: zero carbon economy transition
Welsh: pontio i economi di-garbon
Status B
Subject: Environment
Part of speech: Verb
Last Updated: 18 February 2009
English: zero carbon economy transition
Welsh: pontio i economi di-garbon
Status B
Subject: Environment
Part of speech: Verb
Last Updated: 18 February 2009
English: zero carbon rated green tariff
Welsh: tariff trydan di-garbon
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Gall pobl ddewis talu'r tariff hwn i'w cwmnïau trydan ac er nad yw'r cwsmer yn cael trydan o ffynonellau adnewyddol fel y cyfryw, mae'r cwmni'n addo y bydd yn darparu cyflenwad cyfwerth o drydan gwyrdd i'w roi i'r grid.
Last Updated: 5 March 2008
English: zero carbon rated green tariff
Welsh: tariff trydan di-garbon
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Gall pobl ddewis talu'r tariff hwn i'w cwmnïau trydan ac er nad yw'r cwsmer yn cael trydan o ffynonellau adnewyddol fel y cyfryw, mae'r cwmni'n addo y bydd yn darparu cyflenwad cyfwerth o drydan gwyrdd i'w roi i'r grid.
Last Updated: 5 March 2008
English: zero-emission special purpose vehicle
Welsh: cerbyd di-allyriadau at ddibenion arbennig
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: cerbydau di-allyriadau at ddibenion arbennig
Last Updated: 9 November 2023
English: zero-emission special purpose vehicle
Welsh: cerbyd di-allyriadau at ddibenion arbennig
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: cerbydau di-allyriadau at ddibenion arbennig
Last Updated: 9 November 2023