TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: tanfeddiannu
English: underoccupation
Status B
Subject: Housing
Part of speech: Verb
Last updated: 13 January 2012
Welsh: tanffordd
English: underpass
Status A
Subject: Transport
Part of speech: Noun, Feminine, Singular
Definition: A grade separation in which the subject road passes under a highway or roadway.
Last updated: 19 August 2003
Welsh: tanffrwythlondeb
English: subfertility
Status C
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: A state of reduced fertility.
Last updated: 16 August 2006
Welsh: tanfrechu
English: undervaccination
Status B
Subject: Health
Part of speech: Verb
Definition: Yng nghyd-destun COVID-19, derbyn llai na’r nifer a argymhellir o ddosau o’r brechlyn SARS-CoV-2.
Last updated: 23 January 2025
Welsh: tangyflawni
English: underachieve
Status A
Subject: Education
Part of speech: Verb
Last updated: 7 October 2002
Welsh: tangyflawni
English: underperforming
Status C
Subject: Education
Part of speech: Verb
Last updated: 30 November 2007
Welsh: tangyflawniad
English: underachievement
Status A
Subject: Education
Part of speech: Noun, Masculine, Singular
Last updated: 7 October 2002
Welsh: tangyflogaeth
English: underemployment
Status B
Subject: Economic development
Part of speech: Noun, Masculine, Singular
Definition: Y cyflwr o fod heb ddigon o waith i'w wneud, o fod yn gweithio'n rhan-amser, neu o fod yn gwneud swydd nad yw'n manteisio ar holl sgiliau'r unigolyn.
Last updated: 19 November 2020
Welsh: tangyfrif
English: undercount
Status A
Subject: Finance and statistics
Part of speech: Verb
Last updated: 1 October 2012
Welsh: tangyfrifo
English: under-enumeration
Status C
Subject: The census
Part of speech: Verb
Definition: The extent to which contact was not made with, and/or forms not delivered to, households.
Last updated: 14 November 2008
Welsh: tangyrhaeddiad
English: underattainment
Status C
Subject: Education
Part of speech: Noun, Masculine, Singular
Last updated: 26 April 2010
Welsh: tangyrraedd
English: underattain
Status C
Subject: Education
Part of speech: Verb
Last updated: 26 April 2010
Welsh: tanio
English: firing
Status C
Subject: Environment
Part of speech: Verb
Definition: in pottery-making
Last updated: 5 September 2003
Welsh: tanio
English: discharge
Status B
Subject: Justice and order
Part of speech: Verb
Last updated: 29 August 2012
Welsh: Tanio Cyfranogi
English: Breathing Fire into Participation
Status C
Subject: Politics
Part of speech: Verb
Definition: canllawiau sy'n rhan o'r prosiect newydd 'Funky Dragon/Draig Ffynci' i annog plant a phobl ifanc i ddangos diddordeb yn yr hyn sy'n digwydd yn y Cynulliad
Last updated: 14 January 2003
Welsh: tanio Erthygl 50
English: trigger Article 50
Status B
Subject: Europe
Part of speech: Verb
Context: Cynnig bod y Cynulliad Cenedlaethol… yn nodi bwriad Llywodraeth y DU i danio Erthygl 50 erbyn diwedd mis Mawrth.
Notes: Dyma’r geiriad anffurfiol a ddefnyddir yn gyffredin am y broses o hysbysu am fwriad i ymadael â’r Undeb Ewropeaidd. Nid yw’n derm sy’n codi yn Erthygl 50 ei hun nac yn y dogfennau ffurfiol sy’n ymwneud â’r hysbysiad i ymadael.
Last updated: 8 February 2017
Welsh: taniwr
English: fireman
Status C
Subject: Personnel
Part of speech: Noun, Masculine, Singular
Context: Ar beiriannau stêm.
Last updated: 29 February 2012
Welsh: tanlinell
English: underscore
Status C
Subject: ICT
Part of speech: Noun, Feminine, Singular
Last updated: 12 May 2006
Welsh: tanlinellu
English: underline
Status B
Subject: ICT
Part of speech: Verb
Last updated: 19 July 2005
Welsh: tanlinellu dotiog
English: dotted underline
Status B
Subject: ICT
Part of speech: Verb
Last updated: 19 July 2005
Welsh: tanlinellu dwbl
English: double underline
Status B
Subject: ICT
Part of speech: Verb
Last updated: 19 July 2005
Welsh: tanlwybr
English: subway
Status A
Subject: Planning
Part of speech: Noun, Masculine, Singular
Last updated: 5 November 2004
Welsh: tŷ annedd
English: dwelling-house
Status A
Subject: Housing
Part of speech: Noun, Masculine, Singular
Plural: tai annedd
Definition: tŷ a feddiennir yn breswylfa o'i gyferbynnu â thŷ a ddefnyddir at ddibenion busnes, warws, swyddfa, etc
Last updated: 8 July 2021
Welsh: tantalwm
English: tantalum
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: Ta
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: tanwariant
English: underspend
Status A
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last updated: 21 August 2013
Welsh: tanwario
English: underspend
Status A
Subject: Finance and statistics
Part of speech: Verb
Last updated: 21 August 2013
Welsh: tanwydd
English: fuel
Status A
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau
Last updated: 3 February 2025
Welsh: tanwydd amgen
English: alternative fuel
Status A
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: Tanwydd heblaw am betrol neu diesel ar gyfer pweru cerbydau, er enghraifft trydan, nwy naturiol neu methanol.
Last updated: 27 October 2020
Welsh: tanwydd anawdurdodedig
English: unauthorised fuel
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau anawdurdodedig
Notes: Gallai 'tanwydd heb ei awdurdodi' fod yn addas mewn cyd-destunau llai technegol.
Last updated: 26 January 2023
Welsh: tanwydd ar gyfer coginio a gwresogi
English: fuel for cooking and heating
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 20 August 2008
Welsh: tanwyddau biolegol
English: biologically derived fuels
Status C
Subject: Agriculture
Part of speech: Noun, Plural
Context: I’w cyferbynnu â thanwyddau ffosil. Ffordd arall o ddweud ‘biodanwydd/biofuel'.
Last updated: 21 October 2009
Welsh: tanwydd awdurdodedig
English: authorised fuel
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau awdurdodedig
Notes: Gallai 'tanwydd wedi ei awdurdodi' fod yn addas mewn cyd-destunau llai technegol.
Last updated: 26 January 2023
Welsh: tanwydd cludiant
English: transport fuel
Status C
Subject: Transport
Part of speech: Noun, Masculine, Singular
Last updated: 7 February 2008
Welsh: tanwydd coed
English: wood fuel
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Last updated: 5 February 2004
Welsh: tanwydd contract ymddiogelu
English: hedged fuel
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Definition: Tanwydd y brynwyd drwy gontract a sefydlwyd i'w brynu am gyfnod estynedig ar bris penodedig, er mwyn amddiffyn y prynwr rhag cynnydd annisgwyl ym mhris tanwydd ar y farchnad.
Last updated: 18 May 2023
Welsh: tanwydd ffosil
English: fossil fuel
Status B
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau ffosil
Definition: Tanwydd sy'n deillio o ddyddodion daearegol gweddillion planhigion ac anifeiliaid, megis glo, olew, neu nwy naturiol.
Last updated: 10 February 2022
Welsh: tanwydd hylifol
English: liquid fuel
Status B
Subject: Transport
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau hylifol
Last updated: 18 May 2023
Welsh: tanwydd niwclear
English: nuclear fuel
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau niwclear
Last updated: 23 March 2021
Welsh: tanwydd niwclear a ddisbyddwyd
English: spent nuclear fuel
Status B
Subject: Planning
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau niwclear a ddisbyddwyd
Last updated: 23 March 2021
Welsh: tanwydd solet
English: solid fuel
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Plural: tanwyddau solet
Definition: Deunydd solet y gellir ei losgi i ryddhau ynni, gan ddarparu gwres a golau drwy'r broses hylosgi (o'i gymharu â thanwydd nwy neu danwydd hylif/olew).
Last updated: 26 January 2023
Welsh: Tanwydd yn Deillio o Sbwriel
English: RDF
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Refuse Derived Fuel
Last updated: 27 July 2010
Welsh: Tanwydd yn Deillio o Sbwriel
English: Refuse Derived Fuel
Status C
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: RDF
Last updated: 27 July 2010
Welsh: tanysgrifennu benthyciad
English: underwrite a loan
Status A
Subject: Finance and statistics
Part of speech: Verb
Last updated: 7 May 2013
Welsh: tanyswiriant
English: underinsurance
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last updated: 19 May 2022
Welsh: tanyswirio
English: underinsure
Status B
Subject: Finance and statistics
Part of speech: Verb
Last updated: 19 May 2022
Welsh: Tanzania
English: Tanzania
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: TAPAS
English: TAPAS
Status A
Subject: Education
Part of speech: Proper noun
Definition: Teaching and Assessing Pupils' Mental and Writeen Number Skills
Context: The full title is rarely used.
Last updated: 2 July 2014
Welsh: TAPAS
English: Teaching and Assessing Pupils' Mental and Written Number Skills
Status A
Subject: Education
Part of speech: Proper noun
Definition: TAPAS
Context: The full title is rarely used.
Last updated: 2 July 2014
Welsh: tapio i mewn ac allan
English: tap on, tap off
Status B
Subject: Transport
Part of speech: Adjective
Definition: Disgrifiad o gerdyn teithio a gaiff ei gyffwrdd ar beiriant ar ddechrau a diwedd y daith.
Last updated: 21 February 2024
Welsh: tapr
English: taper
Status C
Subject: Social services
Part of speech: Noun, Masculine, Singular
Definition: DWP term
Last updated: 13 February 2003