TermCymru

Results are displayed in Welsh alphabetical order A-Y

English: false seed bed

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Plural: gwelyau had ffug

Definition: Techneg i reoli chwyn drwy adael i hadau chwyn egino cyn eu codi o’r pridd neu eu dinistrio â gwres. Gellir ailadrodd y broses hon cyn plannu hadau’r cnwd a ddymunir.

Notes: Mae’r term ‘stale seedbed’ yn gyfystyr. Weithiau gwelir y ffurf ‘seedbed’ yn Saesneg.

Last updated: 19 May 2022

Welsh: gwely had ffug

English: false seedbed

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Plural: gwelyau had ffug

Definition: Techneg i reoli chwyn drwy adael i hadau chwyn egino cyn eu codi o’r pridd neu eu dinistrio â gwres. Gellir ailadrodd y broses hon cyn plannu hadau’r cnwd a ddymunir.

Notes: Mae’r term ‘stale seedbed’ yn gyfystyr. Weithiau gwelir y ffurf ‘seed bed’ yn Saesneg.

Last updated: 19 May 2022

Welsh: gwely hirdymor

English: long term bed

Status C

Subject: Social services

Part of speech: Noun, Masculine, Singular

Last updated: 27 January 2010

Welsh: gwely lle darperir cymorth anadlu mewnwthiol

English: invasive ventilator bed

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 21 May 2020

Welsh: gwely maerl

English: maerl bed

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: gwelyau maerl

Notes: Math ar gynefin morol.

Last updated: 22 September 2022

Welsh: gwely pontio

English: transition bed

Status C

Subject: Social services

Part of speech: Noun, Masculine, Singular

Last updated: 27 January 2010

Welsh: gwely rhoi

English: donor bed

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: gwelyau rhoi

Definition: Gwely morwellt y cymerir hedyn, toriad neu blanhigyn ohono i'w drosglwyddo i wely arall.

Last updated: 5 February 2026

Welsh: gwely seibiant

English: respite bed

Status C

Subject: Social services

Part of speech: Noun, Masculine, Singular

Last updated: 27 January 2010

Welsh: gwe-lywio

English: navigate

Status B

Subject: ICT

Part of speech: Verb

Definition: web navigation

Last updated: 23 December 2003

Welsh: gwe-lywio

English: navigation

Status C

Subject: ICT

Part of speech: Verb

Definition: In IT context.

Last updated: 25 June 2007

Welsh: gwe-lywiwr

English: navigator

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Definition: Internet navigator.

Last updated: 23 December 2003

Welsh: gwely ymadfer

English: convalescent bed

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Last updated: 4 December 2013

Welsh: gweminar

English: webinar

Status B

Subject: ICT

Part of speech: Noun, Feminine, Singular

Plural: gweminarau

Definition: Seminar neu gyflwyniad addysgol arall a gyflwynir ar y we.

Last updated: 5 November 2024

Welsh: gwendid

English: vulnerability

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Plural: gwendidau

Definition: Diffyg mewn system gyfrifiadurol a allai olygu bod y system honno yn agored i gael ei thargedu gan ymosodiad.

Last updated: 25 June 2020

Welsh: gwendidau

English: weaknesses

Status B

Subject: Education

Part of speech: Noun, Plural

Definition: Rhaglen Arweinyddiaeth I Benaethiaid mewn Swydd

Last updated: 22 May 2003

Welsh: gwendidau cymharol

English: relative weaknesses

Status B

Subject: Education

Part of speech: Noun, Plural

Last updated: 15 December 2011

Welsh: Gwenerganlyn

English: Follow Friday

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Context: (=#FF)

Last updated: 28 August 2012

Welsh: Gwener Glas

English: Blue Friday

Status C

Subject: Education

Part of speech: Noun, Masculine, Singular

Context: Part of an anti-bullying campaign.

Last updated: 12 December 2006

Welsh: Gwenfô

English: Wenvoe

Status A

Subject: Place-names

Part of speech: Proper noun

Definition: Bro Morgannwg

Last updated: 14 August 2003

Welsh: Gwenfô

English: Wenvoe

Status A

Subject: Place-names

Part of speech: Proper noun

Notes: Ward etholiadol ym Mwrdeistref Sirol Bro Morgannwg. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Bro Morgannwg (Trefniadau Etholiadol) 2021.

Last updated: 17 August 2022

Welsh: Gwenfro

English: Gwenfro

Status A

Subject: Place-names

Part of speech: Proper noun

Notes: Ward etholiadol ym Mwrdeistref Sirol Wrecsam. Dyma'r enwau a ragnodwyd yn Gymraeg a Saesneg ar gyfer y ward yng Ngorchymyn Bwrdeistref Sirol Wrecsam (Trefniadau Etholiadol) 2021.

Last updated: 17 August 2022

Welsh: gwenith caled

English: durum wheat

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last updated: 29 July 2003

Welsh: gwenith cnwd cyfan

English: wholecrop wheat

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 28 July 2010

Welsh: gwenith cyffredin

English: common wheat

Status B

Subject: Plants

Part of speech: Noun, Masculine, Singular

Definition: Triticum aestivum L.

Last updated: 13 June 2025

Welsh: gwenith gaeaf

English: winter wheat

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 22 September 2004

Welsh: gwenith gwanwyn

English: spring wheat

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 22 September 2004

Welsh: gwenith yr Almaen

English: spelt

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 29 July 2003

Welsh: gwenith yr hydd

English: buckwheat

Status B

Subject: Food

Part of speech: Noun, Masculine, Singular

Last updated: 29 July 2003

Welsh: Gwennol Maes Awyr Caerdydd

English: Cardiff Airport Express

Status A

Subject: Transport

Part of speech: Noun, Masculine, Singular

Definition: Bus service.

Last updated: 17 October 2013

Welsh: gwennol y glennydd

English: sand martin

Status C

Subject: Birds

Part of speech: Noun, Feminine, Singular

Last updated: 26 June 2012

Welsh: Gwent Fwyaf

English: Greater Gwent

Status C

Subject: Place-names

Part of speech: Proper noun

Last updated: 25 February 2003

Welsh: gwenwyn

English: poison

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: gwenwynau

Definition: Unrhyw sylwedd sy'n niweidiol neu'n farwol os oes swm digonol ohono'n mynd i mewn i'r corff.

Notes: Mewn cyd-destunau technegol, mae 'gwenwyn'/'poison' yn derm ymbarel sy'n cynnwys mathau penodol o sylweddau, ee tocsinau a fenymau. Mewn cyd-destunau annhechnegol, gellir defnyddio 'gwenwyn' i drosi 'toxin' a 'venom'.

Last updated: 1 October 2024

Welsh: gwenwyn bwyd

English: food poisoning

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Salwch a achoswyd gan fwyta bwyd halogedig

Last updated: 4 April 2019

Welsh: gwenwynig

English: poisonous

Status C

Subject: Agriculture

Part of speech: Adjective

Last updated: 20 August 2008

Welsh: gwenwynig

English: poisonous

Status B

Subject: Environment

Part of speech: Adjective

Definition: Modd o ddisgrifio unrhyw sylwedd sy'n niweidiol neu'n farwol os oes swm digonol ohono'n mynd i mewn i'r corff.

Last updated: 1 October 2024

Welsh: gwenwyn llygod

English: rodenticide

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 3 October 2006

Welsh: gwenwyno difrifol gan CO

English: severe CO poisoning

Status C

Subject: Health

Part of speech: Verb

Definition: CO = carbon monoxide

Last updated: 25 January 2007

Welsh: gwenwyno â nwy

English: gassing

Status C

Subject: Agriculture

Part of speech: Verb

Last updated: 15 February 2010

Welsh: gwenwyno â phlaladdwr

English: pesticide poisoning

Status C

Subject: Environment

Part of speech: Verb

Last updated: 16 July 2014

Welsh: gwenyna

English: bee-keeping

Status A

Subject: Agriculture

Part of speech: Verb

Last updated: 16 July 2014

Welsh: gwenyn cadw

English: managed bees

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Plural

Last updated: 24 September 2012

Welsh: gwenynen feirch

English: wasp

Status C

Subject: Animals

Part of speech: Noun, Feminine, Singular

Context: Gwenyn meirch.

Last updated: 16 July 2014

Welsh: gwenynen feirch ganolwedd

English: median wasp

Status B

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn meirch canolwedd

Definition: Dolichovespula media

Last updated: 17 March 2026

Welsh: gwenynen feirch y coed

English: woodwasp

Status B

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn meirch y coed

Definition: Un o'r rhywogaethau o deulu'r Siricidae.

Notes: Gwelir y ffurfiau 'wood wasp' a wood-wasp' hefyd, ac mae'r ffurf 'horntail' yn gyfystyr. Nid pryfed o deulu'r gwenyn meirch go iawn (Vespa) mo'r rhain.

Last updated: 17 March 2026

Welsh: gwenynen feirch y coed

English: horntail

Status B

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn meirch y coed

Definition: Un o'r rhywogaethau o deulu'r Siricidae.

Notes: Mae'r ffurf woodwasp (neu wood wasp, neu wood-wasp) yn gyfystyr. Nid pryfed o deulu'r gwenyn meirch go iawn (Vespa) mo'r rhain.

Last updated: 17 March 2026

Welsh: gwenynen fêl

English: honey bee

Status B

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn mêl

Definition: Un o'r rhywogaethau o wenyn (genws Apis) sy'n cynhyrchu mêl. O'r 8 rhywogaeth a gydnabyddir, dim ond un (A. mellifera) sy'n gyffredin yng Nghymru.

Last updated: 23 September 2020

Welsh: gwenynen fêl lawndwf

English: adult honey bee

Status B

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn mêl llawndwf

Last updated: 23 September 2020

Welsh: gwenynen hirgorn

English: longhorn bee

Status A

Subject: Animals

Part of speech: Noun, Feminine, Singular

Definition: Eucera longicornis

Context: Also known as "long-horned bee".

Last updated: 6 January 2014

Welsh: gwenynen hirgorn

English: long-horned bee

Status A

Subject: Animals

Part of speech: Noun, Feminine, Singular

Definition: Eucera longicornis.

Context: Also known as "longhorn bee".

Last updated: 6 January 2014

Welsh: gwenynen unig

English: solitary bee

Status C

Subject: Animals

Part of speech: Noun, Feminine, Singular

Plural: gwenyn unig

Definition: There are more than 200 species of solitary bee in Britain. They are so named because, unlike honeybees and bumblebees, they do not live in colonies.

Context: Mae pryfed peillio yn cynnwys gwenyn mêl, cacwn/gwenyn bwm a gwenyn unig eraill, rhai picwn/gwenyn meirch, gloÿnnod byw, gwyfynod a chlêr hofran, a rhai chwilod a chlêr/pryfaid.

Last updated: 3 November 2016

TermCymru

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