TermCymru

Results are displayed in Welsh alphabetical order A-Y
Welsh: octopws
English: octopus
Status A
Subject: Agriculture
Part of speech: Noun, Masculine, Singular
Definition: Teulu’r Octopodidae
Last updated: 19 March 2012
Welsh: octylffenol
English: octylphenol
Status C
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Last updated: 1 November 2010
Welsh: ocwloblasteg
English: oculoplastics
Status B
Subject: Health
Part of speech: Noun, Feminine, Singular
Notes: Yng nghyd-destun optometreg.
Last updated: 25 February 2021
Welsh: o dan
English: under
Status C
Subject: General
Part of speech: Preposition
Last updated: 15 December 2010
Welsh: o dan awdurdod y Gweinidog dros...
English: under the authority of the Minister for...
Status C
Subject: Law
Part of speech: Preposition
Last updated: 30 July 2007
Welsh: o dan eich rheolaeth lwyr chi
English: under your sole management and control
Status C
Subject: Agriculture
Part of speech: Preposition
Last updated: 26 January 2010
Welsh: o dan fygythiad o ddigartrefedd
English: threatened with homelessness
Status A
Subject: Housing
Part of speech: Adjective
Notes: Ymadrodd a ddefnyddir yn y ddeddfwriaeth sy'n ymwneud â thai a digartrefedd.
Last updated: 21 February 2025
Welsh: o dan fygythiad o ddigartrefedd
English: at threat of homelessness
Status A
Subject: Housing
Part of speech: Adjective
Last updated: 16 September 2013
Welsh: o dan wydr / plastig
English: under protection
Status C
Subject: Agriculture
Part of speech: Adjective
Definition: vegetables, fruit etc.
Last updated: 1 September 2004
Welsh: o darddiad naturiol
English: naturally derived
Status A
Subject: Environment
Part of speech: Adjective
Last updated: 10 June 2013
Welsh: oddi ar y fantolen
English: off balance sheet
Status A
Subject: Finance and statistics
Part of speech: Adjective
Definition: Trafodiadau lle nad yw'r cyllid a'r ased yn ymddangos ar y fantolen.
Notes: Term o faes cyfrifyddu.
Last updated: 4 December 2018
Welsh: oddi ar y safle
English: off-site
Status B
Subject: Economic development
Part of speech: Adjective
Notes: Yng nghyd-destun canllawiau i weithleoedd yn sgil COVID-19.
Last updated: 25 June 2020
Welsh: o ddiddordeb hanesyddol neu bensaernïol eithriadol
English: outstanding historic or architectural interest
Status A
Subject: Estates and Cadw
Part of speech: Adjective
Notes: Yng nghyd-destun y ddeddwriaeth ar gyfer henebion ac adeiladau rhestredig.
Last updated: 3 February 2022
Welsh: o ddiddordeb i Gymru yn unig
English: purely Welsh interest
Status B
Subject: Law
Part of speech: Adjective, Masculine, Singular
Definition: As defined in the Gifts to the Nation Scheme.
Last updated: 23 April 2012
Welsh: oddi wrth y cwsmer
English: upstream
Status C
Subject: ICT
Part of speech: Adjective
Definition: Broadband speed eg up to 250 kbps upstream.
Last updated: 22 January 2007
Welsh: o deulu’r ddafad
English: ovine
Status C
Subject: Agriculture
Part of speech: Adjective
Last updated: 29 July 2003
Welsh: ïodin
English: iodine
Status A
Subject: Environment
Part of speech: Noun, Masculine, Singular
Definition: Symbol cemegol: I
Notes: Elfen gemegol. Gweler y canllawiau sillafu termau benthyg gwyddonol ar BydTermCymru.
Last updated: 18 June 2025
Welsh: ODP
English: ODP
Status C
Subject: Health
Part of speech: Neutral
Definition: operating department practitioner
Last updated: 23 September 2004
Welsh: ODPM
English: ODPM
Status A
Subject: Politics
Part of speech: Noun, Feminine, Singular
Definition: Office of the Deputy Prime Minister
Context: Former UK Cabinet post.
Last updated: 21 July 2005
Welsh: o dras Affricanaidd
English: of African descent
Status B
Subject: Personnel
Part of speech: Adjective
Last updated: 25 March 2021
Welsh: ods
English: odds
Status B
Subject: Finance and statistics
Part of speech: Noun, Masculine, Singular
Definition: Disgrifiad o ba mor debygol yw rhywbeth o ddigwydd o’i gymharu â pha mor debygol yw o beidio â digwydd; fel arfer yn cael ei fynegi fel cymhareb megis “3:1”.
Notes: Cymharer â’r term probability / tebygolrwydd.
Last updated: 21 January 2026
Welsh: odyn
English: kiln
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Plural: odynau
Last updated: 2 April 2025
Welsh: odyn droi
English: rotary kiln
Status C
Subject: Environment
Part of speech: Noun, Feminine, Singular
Last updated: 5 September 2003
Welsh: oed datblygiad
English: developmental age
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Oed sy'n cyfateb i'r lefel y bydd unigolyn wedi ei gyrraedd mewn perthynas â'r cerrig milltir datblygiadol arferol (er enghraifft cerdded a siarad) ar gyfer pobl ar yr oed hwnnw. Nid yw o reidrwydd yn cyfateb i oed yr unigolyn hwnnw mewn blynyddoedd ers ei eni.
Last updated: 9 January 2020
Welsh: oedema
English: oedema
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Cyflwr lle bydd hylif dyfrllyd yn casglu yng nghelloedd a cheudodau'r corff.
Last updated: 25 June 2020
Welsh: oedema macwlaidd systoid
English: cystoid macular oedema
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yng nghyd-destun optometreg. Defnyddir yr acronym CMO yn Saesneg.
Last updated: 25 February 2021
Welsh: oedema macwlaidd systoid
English: CMO
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Notes: Yng nghyd-destun optometreg. Dyma'r acronym Saesneg a ddefnyddir am cystoid macular oedema.
Last updated: 25 February 2021
Welsh: oed-gyfeillgar
English: age-friendly
Status B
Subject: Health
Part of speech: Adjective
Last updated: 27 April 2023
Welsh: oedi
English: delay
Status B
Subject: ICT
Part of speech: Verb
Last updated: 19 July 2005
Welsh: oedi
English: defer
Status B
Subject: Justice and order
Part of speech: Verb
Notes: Yn achos dedfrydau ac ati.
Last updated: 19 July 2023
Welsh: oediad
English: delay
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 19 July 2005
Welsh: oediad adwy
English: gate delay
Status B
Subject: ICT
Part of speech: Noun, Masculine, Singular
Last updated: 19 July 2005
Welsh: oedi cyn adrodd
English: reporting lag
Status B
Subject: Finance and statistics
Part of speech: Verb
Notes: Term o faes ystadegaeth.
Last updated: 9 December 2020
Welsh: oedi datblygiadol
English: development delay
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Last updated: 2 December 2004
Welsh: oed ieithyddol
English: language age
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Uned fesur sgiliau iaith mewn cymhariaeth ag oed cronolegol yr unigolyn.
Notes: Mae’r term Saesneg ‘linguistic age’ yn gyfystyr.
Last updated: 7 July 2025
Welsh: oed ieithyddol
English: linguistic age
Status B
Subject: Education
Part of speech: Noun, Masculine, Singular
Definition: Uned fesur sgiliau iaith mewn cymhariaeth ag oed cronolegol yr unigolyn.
Notes: Mae’r term Saesneg ‘language age’ yn gyfystyr.
Last updated: 7 July 2025
Welsh: oedi mewn datblygiad
English: developmental delay
Status A
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Cyflwr lle bydd plentyn yn cymryd yn hwy na phlant eraill o'i oedran i gyrraedd rhai cerrig milltir penodol o ran datblygiad.
Last updated: 9 January 2020
Welsh: oedi mewn datblygu iaith
English: development language delay
Status C
Subject: Health
Part of speech: Verb
Last updated: 6 November 2003
Welsh: oedi mewn iaith lafar
English: spoken language delay
Status C
Subject: Health
Part of speech: Verb
Last updated: 6 November 2003
Welsh: oedi o ran sgiliau iaith cynnar
English: early language delay
Status C
Subject: Health
Part of speech: Verb
Context: Cafodd y ddau bapur ymchwil a gomisiynwyd gan Lywodraeth Cymru eu croesawu gan Goleg Brenhinol y Therapyddion Lleferydd ac Iaith, a hynny oherwydd eu bod yn tynnu sylw at y rôl sydd gan therapyddion lleferydd ac iaith i'w chwarae o ran mynd i'r afael ag oedi o ran sgiliau iaith cynnar ymhlith plant ieuengaf a mwyaf difreintiedig Cymru.
Notes: O ganllawiau ar leferydd, iaith a chyfathrebu.
Last updated: 21 July 2015
Welsh: oedi'r argraffu
English: pause printing
Status B
Subject: ICT
Part of speech: Verb
Last updated: 19 July 2005
Welsh: oedi wrth ddatblygu iaith
English: language delay
Status B
Subject: Health
Part of speech: Noun, Masculine, Singular
Definition: Anhwylder iaith lle bydd plentyn yn methu â datblygu galluoedd iaith yn y cyfnod arferol a nodir sy'n addas ar gyfer ei oedran.
Last updated: 13 March 2024
Welsh: oedi wrth drosglwyddo gofal
English: delayed transfer of care
Status A
Subject: Health
Part of speech: Verb
Definition: DTOC
Last updated: 20 October 2003
Welsh: oedi wrth drosglwyddo gofal
English: delayed transfers of care
Status A
Subject: Health
Part of speech: Verb
Last updated: 6 November 2003
Welsh: oedi wrth drosglwyddo gofal
English: DTOC
Status A
Subject: Health
Part of speech: Verb
Definition: delayed transfer of care
Last updated: 27 January 2010
Welsh: oedi wrth drosglwyddo gofal
English: DTOC
Status A
Subject: Health
Part of speech: Verb
Definition: delayed transfer of care
Last updated: 17 September 2012
Welsh: oedi y mae modd ei osgoi
English: avoidable delay
Status C
Subject: Transport
Part of speech: Verb
Last updated: 12 September 2007
Welsh: oedi yn achos llwybrau gofal
English: pathways of care delays
Status C
Subject: Health
Part of speech: Verb
Notes: Ystadegyn a gofnodir gan Lywodraeth Cymru.
Last updated: 29 June 2023
Welsh: oedolion
English: adults
Status C
Subject: Health
Part of speech: Noun, Plural
Definition: humans
Last updated: 19 December 2003
Welsh: oedolion anweithgar
English: inactive adults
Status C
Subject: Health
Part of speech: Noun, Plural
Last updated: 10 March 2008