TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: Tirweddau Cenedlaethol: Gwireddu eu Potensial
English: National Landscapes: Realising their Potential
Status A
Subject: Environment
Part of speech: Proper noun
Notes: Adroddiad yr Adolygiad o Dirweddau Dynodedig yng Nghymru. Cyhoeddwyd ym mis Hydref 2015.
Last updated: 15 March 2016
Welsh: Tirweddau Cynaliadwy, Lleoedd Cynaliadwy
English: Sustainable Landscapes, Sustainable Places
Status A
Subject: Environment
Part of speech: Proper noun
Notes: Dogfen gan Lywodraeth Cymru.
Last updated: 7 March 2024
Welsh: Tirweddau Hanesyddol
English: Historic Landscapes
Status B
Subject: Environment
Part of speech: Noun, Feminine, Plural
Context: Glastir
Last updated: 29 May 2012
Welsh: Tirwedd Ddiwydiannol Blaenafon, Safle Treftadaeth y Byd
English: Blaenavon Industrial Landscape, World Heritage Site
Status C
Subject: Economic development
Part of speech: Noun, Feminine, Singular
Last updated: 22 February 2006
Welsh: tirwedd ddynodedig
English: designated landscape
Status A
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: tirweddau dynodedig
Definition: Ardal sydd wedi ei diffinio'n gyfreithiol, mewn perthynas â'i nodweddion tirweddol.
Context: Caiff y cynlluniau rheoli hyn eu llunio mewn partneriaeth â rhanddeiliaid o bob math ac maent yn cynnig cyfle unigryw i gymunedau a defnyddwyr yr arfordir i ymddiddori yn y Tirweddau Dynodedig hyn a helpu i lywio dyfodol y mannau arbennig hyn.
Last updated: 16 October 2023
Welsh: Tirwedd Fyw
English: Living Landscape
Status A
Subject: Environment
Part of speech: Proper noun, Feminine, Singular
Definition: Environmental management scheme.
Context: Lluosog: Tirweddau Byw
Last updated: 2 October 2013
Welsh: tirwedd hanesyddol
English: historic landscape
Status C
Subject: Estates and Cadw
Part of speech: Noun, Feminine, Singular
Last updated: 5 September 2003
Welsh: Tirwedd sydd wedi'i Bennu'n Statudol
English: Statutory Designated Landscape
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last updated: 29 October 2012
Welsh: tirweddu
English: landscaping
Status C
Subject: Planning
Part of speech: Verb
Last updated: 23 July 2003
Welsh: tirwedd warchodedig
English: protected landscape
Status B
Subject: Law
Part of speech: Noun, Feminine, Singular
Plural: tirweddau gwarchodedig
Last updated: 16 October 2023
Welsh: tir wedi’i balu
English: grubbed land
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 29 July 2003
Welsh: tir wedi’i goedwigo
English: afforested area
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Afforestation is the establishment of a forest or stand of trees in an area where there was no forest.
Context: Cewch roi coedlan cylchdro byr a thir wedi’i goedwigo ar unrhyw dir amaethyddol ar y daliad, h.y. nid oes raid eu rhoi ar dir âr.
Last updated: 21 March 2016
Welsh: tir wedi'i wella
English: improved land
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 19 May 2004
Welsh: tir wedi'i wella a'i amgáu
English: enclosed improved land
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 24 November 2009
Welsh: tir y contract
English: contract area
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Context: Lluosog: tiroedd y contract.
Last updated: 25 March 2014
Welsh: tir y cyhoedd
English: public realm
Status C
Subject: Planning
Part of speech: Noun, Masculine, Singular
Definition: Outdoor areas accessible to the public.
Last updated: 10 January 2003
Welsh: tir y fferm gartre
English: home farm land
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 13 July 2010
Welsh: tir y Goron
English: Crown land
Status A
Subject: Law
Part of speech: Noun, Masculine, Singular
Plural: tiroedd y Goron
Definition: Tir y mae buddiant y Goron neu fuddiant y Ddugiaeth ynddo.
Last updated: 11 November 2024
Welsh: tir y mae’r risg o oferu drosto yn isel
English: land that has a low run-off risk
Status B
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Plural: tiroedd y mae'r risg o oferu drostynt yn isel
Notes: Yng nghyd-destun rheoli llygredd amaethyddol.
Last updated: 1 October 2020
Welsh: tir y mae’r tenant wedi trefnu nad oes cwota yn perthyn iddo
English: land from which quota has been removed
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 29 July 2003
Welsh: Tirymynach
English: Tirymynach
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
Welsh: tisian
English: sneeze
Status C
Subject: Health
Part of speech: Verb
Last updated: 22 September 2009
Welsh: titaniwm
English: titanium
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Ti
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: titw mawr
English: great tit
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Parus major
Context: Lluosog: titwod mawr.
Last updated: 13 November 2014
Welsh: titw penddu
English: coal tit
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Parus ater
Context: Lluosog: titwod penddu.
Last updated: 13 November 2014
Welsh: titw'r wern
English: marsh tit
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Parus palustris
Context: Lluosog: titwod y wern.
Last updated: 13 November 2014
Welsh: titw Tomos las
English: blue tit
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Cyanistes caeruleus
Context: Formerly Parus caeruleus.
Last updated: 13 November 2014
Welsh: tiwb arnofio
English: float tubing
Status B
Subject: Tourism and leisure
Part of speech: Noun, Masculine, Singular
Last updated: 29 March 2006
Welsh: tiwb craidd
English: core tube
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tiwbiau craidd
Context: Yn yr erthygl hon, ystyr “samplu fibrograidd” yw’r dechneg pan gaiff tiwb craidd ei durio i mewn i waddodion tanddwr megis tywod, silt, clai neu briddoedd meddal gan ddefnyddio pen dirgrynu, wedi ei bweru’n electronig neu’n hydrolig, i gasglu sampl graidd ddi-dor.
Notes: Daw'r frawddeg gyd-destunol o Orchymyn Trwyddedu Morol (Gweithgareddau Esempt) (Cymru) (Diwygio) 2026.
Last updated: 5 February 2026
Welsh: tiwb ffalopaidd
English: fallopian tube
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwbiau ffalopaidd
Last updated: 7 January 2025
Welsh: tiwbin
English: tubing
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwbinau
Notes: Rhan o gymhorthion clyw.
Last updated: 8 September 2020
Welsh: tiwb nasogastrig
English: nasogastric tube
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 16 April 2012
Welsh: tiwb pelydrau catod
English: cathode ray tube
Status C
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 25 July 2005
Welsh: tiwb profi
English: test tube
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwbiau profi
Last updated: 6 November 2019
Welsh: tiwb traceostomi
English: tracheostomy tube
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwbiau traceostomi
Context: Mae'n debygol o gynnwys tasgau fel gofal tiwb traceostomi, sugnedd llwybr anadlu, adleoli i reoli mannau pwyso ac ymyriadau gofal megis ffisiotherapi anadlol.
Last updated: 4 March 2021
Welsh: tiwb tryledu
English: diffusion tube    
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tiwbiau tryledu
Definition: Dyfais ar gyfer mesur nitrogen deuocsid yn yr aer.
Last updated: 3 October 2019
Welsh: tiwb y glust
English: ear canal
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 8 September 2020
Welsh: tiwlip
English: tulip
Status C
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Last updated: 27 January 2004
Welsh: tiwmor
English: tumour
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 2 February 2006
Welsh: tiwmorau'n ymosod
English: tumorous infiltration
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Last updated: 10 September 2003
Welsh: tiwmor cychwynnol
English: primary tumour
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwmorau cychwynnol
Definition: Y tiwmor gwreiddiol, neu gyntaf, yn y corff. Gall celloedd canser o ganser cychwynnol ledu i rannau eraill o’r corff a ffurfio tiwmorau newydd, neu eilaidd. Metastasis yw’r enw ar hyn. Bydd y tiwmorau eilaidd o’r un fath o ganser â’r canser cychwynnol
Notes: Mae’r term primary cancer / canser cychwynnol yn gyfystyr.
Last updated: 25 November 2022
Welsh: tiwmor eilaidd
English: secondary tumour
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Plural: tiwmorau eilaidd
Definition: Canser sydd wedi lledu o’r man lle y cychwynnodd i ran arall o’r corff. Bydd canserau eilaidd o’r un math o ganser a’r canser cychwynnol (gwreiddiol). Er enghraifft, gall celloedd canser ledu o’r fron (canser cychwynnol) i ffurfio tiwmorau newydd yn yr ysgyfaint (canser eilaidd). Bydd y celloedd canser yn yr ysgyfaint yn unfath â’r rhai yn y fron.
Notes: Mae’r term secondary cancer / canser eilaidd yn gyfystyr.
Last updated: 25 November 2022
Welsh: tiwmor malaen
English: malignant tumour
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Last updated: 7 May 2009
Welsh: tiwmor solet
English: solid tumour
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yng nghyd-destun canser.
Last updated: 9 December 2021
Welsh: tiwna
English: tuna
Status A
Subject: Animals
Part of speech: Noun, Masculine, Singular
Last updated: 8 June 2011
Welsh: tiwna albacore
English: albacore tuna
Status B
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Thunnus alalunga
Last updated: 14 March 2019
Welsh: tiwna asgell las
English: bluefin tuna
Status B
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Thunnus thynnus
Last updated: 14 March 2019
Welsh: tiwna llygad mawr
English: big-eye tuna
Status B
Subject: Animals
Part of speech: Noun, Masculine, Singular
Definition: Thunnus obesus
Last updated: 14 March 2019
Welsh: tiwnio i mewn
English: tune into
Status B
Subject: Education
Part of speech: Verb
Definition: Yng nghyd-destun cyfathrebu â babanod a phlant bach, cymryd sylw agos a bod yn ymwybodol o'r hyn y maent yn ei deimlo, yr hyn sydd ei angen arnynt neu'r hyn maent yn ei ddangos drwy eu hymddygiad a'u dulliau cyfathrebu. Mae'n cynnwys sylwi ar giwiau cynnil fel mynegiant wyneb, ystumiau neu dôn y llais, ac ymateb yn briodol.
Notes: Term a ddefnyddir yn neunyddiau'r cwricwlwm.
Last updated: 20 August 2025
Welsh: tiwtora gartref
English: home tuition
Status B
Subject: Education
Part of speech: Verb
Last updated: 22 October 2020