TermCymru

Results are displayed in Welsh alphabetical order A-Y

English: educational psychologist

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: seciolegwyr addysg

Context: 7.47 Bydd angen ystyried a oes rhesymau dros danberfformiad, ar wahân i ADY, ac, os felly, a oes ffyrdd eraill mwy priodol o helpu'r plentyn i ddysgu, ee ei gyfeirio at seicolegydd addysg, gwasanaethau llesiant addysg, gwasanaethau cymdeithasol neu gyrff iechyd.

Last updated: 23 April 2020

Welsh: Seicolegydd Arbenigol

English: Specialist Psychologist

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 13 December 2010

Welsh: seicolegydd clinigol

English: clinical psychologist

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: seicolegwyr clinigol

Last updated: 30 August 2024

Welsh: seicolegydd clinigol ymgynghorol

English: consultant clinical psychologist

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 17 January 2007

Welsh: seicolegydd cofrestredig

English: registered psychologist

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: seicolegydd cofrestredig

Notes: Mae'r term hwn yn gyfystyr â practitioner psychologist / ymarferydd seicoleg.

Last updated: 26 January 2022

Welsh: Seicolegydd Cwnsela Ymgynghorol

English: Consultant Counselling Psychologist

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 23 January 2009

Welsh: Seicolegydd Cymwysedig, Grŵp Gofal Iechyd Arbenigol

English: Applied Psychologist in Healthcare Specialist Group

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 25 February 2013

Welsh: seicotherapi systemig

English: systemic psychotherapy

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 3 June 2008

Welsh: seicoweithredol

English: psychoactive

Status C

Subject: Health

Part of speech: Adjective

Last updated: 5 January 2011

Welsh: seidin

English: siding

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Plural: seidins

Definition: Darn o drac byr wrth ochr rheilffordd.

Last updated: 15 September 2025

Welsh: seidr

English: cider

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 1 September 2004

Welsh: Seientiad Cristnogol

English: Christian Scientist

Status C

Subject: Religion

Part of speech: Noun, Masculine, Singular

Plural: Seientiaid Cristnogol

Last updated: 30 August 2024

Welsh: seiffno

English: siphon

Status A

Subject: Environment

Part of speech: Verb

Last updated: 17 January 2013

Welsh: seiffon

English: siphon

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 11 February 2004

Welsh: seiffon

English: syphon

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 29 July 2003

Welsh: seilbyst llenni

English: sheet piling

Status B

Subject: Planning

Part of speech: Noun, Plural

Definition: Darnau o ddur siâp U neu Z sy’n cyd-gloi i greu wal neu rwystr strwythurol. Fe'u defnyddir ar gyfer sylfeini neu waliau cynnal, yn ogystal â gwaith amddiffyn arfordirol ac ar hyd glannau afonydd.

Last updated: 3 March 2026

Welsh: seiliau caled

English: hardcore

Status C

Subject: Planning

Part of speech: Noun, Plural

Last updated: 17 October 2005

Welsh: seiliedig ar ddeunydd biolegol

English: bio-based

Status B

Subject: Environment

Part of speech: Adjective

Definition: Disgrifiad o ddeunydd a weithgynhyrchwyd o sylweddau sy'n deillio o organebau byw neu organebau a fu unwaith yn fyw.

Last updated: 14 November 2023

Welsh: seiliedig ar destunau

English: topic-driven

Status C

Subject: General

Part of speech: Adjective

Last updated: 14 June 2004

Welsh: seiliedig ar gryfderau

English: strengths-based

Status B

Subject: Health

Part of speech: Adjective

Last updated: 14 November 2023

Welsh: seiliedig ar waith

English: work-based

Status A

Subject: Education

Part of speech: Adjective

Definition: eg learning, education

Last updated: 14 June 2004

Welsh: seilnod siart

English: chart datum

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Definition: Lefel safonedig dŵr môr, y mae’r dyfnderoedd a ddynodir ar siart fordwyo yn cael eu mesur ohoni.

Notes: Cymharer â’r Ordnance Survey datum / seilnod yr Arolwg Ordnans, y mesurir uchderau ar y tir ohoni.

Last updated: 17 February 2025

Welsh: seilnod yr Arolwg Ordnans

English: OS datum

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Definition: Lefel safonedig dŵr môr, y mae’r cyfuchlinau a phwyntiau uchder ar fapiau tir yn cael eu mesur ohoni. Yn achos y DU, mae seilnod yr Arolwg Ordnans yn seiliedig ar fesuriad yn Newlyn, Cernyw.

Notes: Cymharer â chart datum / seilnod siart, y mesurir dyfnderoedd ar fapiau mordwyo ohoni.

Last updated: 17 February 2025

Welsh: seilnod yr Arolwg Ordnans

English: Ordnance Survey datum

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Notes: Cymharer â chart datum / seilnod siart, y mesurir dyfnderoedd ar fapiau mordwyo ohoni.

Last updated: 17 February 2025

Welsh: seilo

English: silo

Status A

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Plural: seilos

Context: Rhaid i sylfaen y seilo, sylfaen a waliau ei danc elifiant a sianelau ac ochrau unrhyw bibellau fod yn anhydraidd.

Last updated: 1 October 2020

Welsh: seilwaith

English: infrastructure

Status A

Subject: General

Part of speech: Noun, Masculine, Singular

Last updated: 30 April 2024

Welsh: Seilwaith ac ad-drefnu

English: Infrastructure and reconfiguration

Status C

Subject: Finance and statistics

Definition: Teitl cyllideb

Last updated: 23 April 2008

Welsh: seilwaith allweddi cyhoeddus

English: public key infrastructure

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Definition: Set o rolau, polisïau, caledwedd, meddalwedd a gweithdrefnau i greu, rheoli, dosbarthu, defnyddio, storio a dirymu tystysgrifau digidol, ac i reoli prosesau amgryptio allweddi cyhoeddus.

Last updated: 17 October 2023

Welsh: seilwaith allweddi cyhoeddus

English: PKI

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Notes: Dyma'r acronym Saesneg a ddefnyddir am public key infrastructure. Sylwer y gallai'r acronym hwnnw fod yn addas wrth drosi acronymau cysylltiedig fel PKIaaS.

Last updated: 17 October 2023

Welsh: seilwaith allweddol

English: critical infrastructure

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last updated: 19 May 2022

Welsh: Seilwaith a meithrin gallu

English: Infrastructure and capacity building

Status C

Subject: Economic development

Last updated: 7 January 2008

Welsh: seilwaith beicio

English: cycling infrastructure

Status C

Subject: Transport

Part of speech: Noun, Masculine, Singular

Last updated: 5 March 2009

Welsh: seilwaith cyfathrebu digidol

English: digital communications infrastructure

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last updated: 13 August 2020

Welsh: seilwaith cynhyrchu ynni mewn perchnogaeth leol

English: locally owned energy generation

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last updated: 7 October 2021

Welsh: seilwaith cynhyrchu ynni ym mherchnogaeth y cyhoedd

English: publicly owned energy generation

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last updated: 7 October 2021

Welsh: seilwaith dargymryd

English: off-take infrastructure

Status B

Subject: Economic development

Part of speech: Noun, Masculine, Singular

Definition: Yng nghyd-destun y diwydiant ynni hydrogen, y seilwaith sy’n galluogi cynhyrchu, cyflenwi neu ddefnyddio hydrogen gan y sectorau a’r cwmnïau sy’n ymrwymo i’w brynu.

Notes: Mewn cyd-destunau llai technegol, mae’n bosibl y gellid defnyddio aralleiriad fel “seilwaith cynhyrchu hydrogen” neu “seilwaith cyflenwi hydrogen” gan ddibynnu ar y cyd-destun.

Last updated: 15 January 2026

Welsh: seilwaith digidol

English: digital infrastructure

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last updated: 13 August 2020

Welsh: seilwaith draenio

English: drainage infrastructure

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last updated: 19 May 2022

Welsh: Seilwaith fel Gwasanaeth

English: Infrastructure as a Service

Status A

Subject: ICT

Part of speech: Noun, Masculine, Singular

Context: IaaS

Last updated: 23 June 2014

Welsh: Seilwaith fel Gwasanaeth

English: IaaS

Status A

Subject: ICT

Part of speech: Noun, Masculine, Singular

Definition: Infrastructure as a Service

Last updated: 23 June 2014

Welsh: seilwaith ffiniau

English: border infrastructure

Status B

Subject: Politics

Part of speech: Noun, Masculine, Singular

Last updated: 23 December 2020

Welsh: seilwaith ffisegol

English: physical infrastructure

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Context: Seilwaith ffisegol - lle bo modd o gyllid refeniw, yn enwedig cymhwyso TGCh.

Notes: Pennawd mewn cyfrifon ariannol

Last updated: 13 September 2018

Welsh: seilwaith gwefru cerbydau trydan

English: electric vehicle charging infrastructure

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Last updated: 10 February 2022

Welsh: seilwaith gwefru chwim ar gyfer cerbydau trydan

English: EV rapid charging infrastructure

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Last updated: 22 December 2022

Welsh: seilwaith gwyrdd

English: green infrastructure

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: The European Commission defines green infrastructure as: “the use of ecosystems, green spaces and water in strategic land use planning to deliver environmental and quality of life benefits. It includes parks, open spaces, playing fields, woodlands, wetlands, road verges, allotments and private gardens. Green infrastructure can contribute to climate change mitigation and adaptation, natural disaster risk mitigation, protection against flooding and erosion as well as biodiversity conservation” (The Scottish Government, Green Infrastructure: Design and Placemaking).

Last updated: 31 July 2018

Welsh: seilwaith gwyrdd

English: green infrastructure

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: The use of ecosystems, green spaces and water in strategic land use planning to deliver environmental and quality of life benefits.

Last updated: 1 August 2018

Welsh: seilwaith gyhoeddus

English: public infrastructure

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last updated: 7 October 2021

Welsh: seilwaith rheilffyrdd

English: rail infrastructure

Status A

Subject: Transport

Part of speech: Noun, Masculine, Singular

Last updated: 27 October 2020

Welsh: Seilwaith Rheilffyrdd a Gwell Gwasanaethau i Deithwyr

English: Rail Infrastructure and Improved Passenger Services

Status C

Subject: Transport

Part of speech: Noun, Masculine, Singular

Definition: RIIPS

Last updated: 27 March 2008

Welsh: Seilwaith Rheilffyrdd a Gwell Gwasanaethau i Deithwyr

English: RIIPS

Status C

Subject: Transport

Part of speech: Noun, Masculine, Singular

Definition: Rail Infrastructure and Improved Passenger Services

Last updated: 27 March 2008

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