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English: natural variability

Status C

Subject: Environment

Part of speech: Noun, Plural

Definition: Yr amrywiaeth sy’n digwydd yn naturiol mewn natur e.e. mae’r tymheredd yn gostwng ac yn codi yn naturiol o flwyddyn i flwyddyn, a gallai hwnnw guddio unrhyw duedd allai fod yn digwydd o dan ddylanwad arall sy’n newid yr hinsawdd.

Last updated: 19 December 2011

Welsh: amrywiadau naturiol

English: natural variability

Status C

Subject: Environment

Part of speech: Noun, Plural

Definition: Yr amrywiaeth sy’n digwydd yn naturiol mewn natur e.e. mae’r tymheredd yn gostwng ac yn codi yn naturiol o flwyddyn i flwyddyn, a gallai hwnnw guddio unrhyw duedd allai fod yn digwydd o dan ddylanwad arall sy’n newid yr hinsawdd.

Last updated: 19 December 2011

Welsh: amrywiadau nodweddion rhyw

English: variations of sex characteristics

Status B

Subject: Health

Part of speech: Noun, Plural

Definition: Grŵp o gyflyrau prin sy'n ymwneud â genynnau, hormonau ac organau atgenhedlu, a all olygu bod person yn datblygu'n wahanol i'r rhan fwyaf o bobl.

Context: Intersex and VSC: An intersex person is someone who does not fit conventional expectations for male or female development in terms of anatomy, metabolism or genetics. The opposite of intersex is endosex, which is where a person does fit conventional expectations. Some clinicians use the term differences in sex development (DSD), but this term is unpopular among intersex groups as it is connected to the former meaning of DSD as “disorders of sex development”. The term “disorder” is felt to be pejorative. Similarly, the term intersex is sometimes rejected by some groups and may prefer to refer to “Variations of Sex Characteristics” (VSC) or “variations in reproductive or sex anatomy”.

Notes: Term arall am 'wahaniaethau datblygiad rhyw' / 'differences in sex development', ac a elwir weithiau'n 'anhwylderau datblygiad rhyw' / 'disorders of sex development'. Gall gynnwys bod yn 'rhyngryw' / 'intersex'.

Last updated: 2 May 2024

Welsh: amrywiadau nodweddion rhyw

English: variations of sex characteristics

Status B

Subject: Health

Part of speech: Noun, Plural

Definition: Grŵp o gyflyrau prin sy'n ymwneud â genynnau, hormonau ac organau atgenhedlu, a all olygu bod person yn datblygu'n wahanol i'r rhan fwyaf o bobl.

Context: Intersex and VSC: An intersex person is someone who does not fit conventional expectations for male or female development in terms of anatomy, metabolism or genetics. The opposite of intersex is endosex, which is where a person does fit conventional expectations. Some clinicians use the term differences in sex development (DSD), but this term is unpopular among intersex groups as it is connected to the former meaning of DSD as “disorders of sex development”. The term “disorder” is felt to be pejorative. Similarly, the term intersex is sometimes rejected by some groups and may prefer to refer to “Variations of Sex Characteristics” (VSC) or “variations in reproductive or sex anatomy”.

Notes: Term arall am 'wahaniaethau datblygiad rhyw' / 'differences in sex development', ac a elwir weithiau'n 'anhwylderau datblygiad rhyw' / 'disorders of sex development'. Gall gynnwys bod yn 'rhyngryw' / 'intersex'.

Last updated: 2 May 2024

Welsh: amrywiad clinigol direswm

English: unwarranted clinical variation

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: amrywiadau clinigol direswm

Last updated: 25 April 2024

Welsh: amrywiad clinigol direswm

English: unwarranted clinical variation

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: amrywiadau clinigol direswm

Last updated: 25 April 2024

Welsh: amrywiad gofodol

English: spatial variation

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last updated: 11 April 2012

Welsh: amrywiad gofodol

English: spatial variation

Status B

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last updated: 11 April 2012

Welsh: amrywiaeth

English: diversity

Status B

Subject: Personnel

Part of speech: Noun, Feminine, Singular

Last updated: 6 April 2004

Welsh: amrywiaeth

English: diversity

Status B

Subject: Personnel

Part of speech: Noun, Feminine, Singular

Last updated: 6 April 2004

Welsh: amrywiaeth

English: variety

Status C

Subject: Law

Part of speech: Noun, Feminine, Singular

Definition: ansawdd o fod yn amrywiol etc.

Last updated: 7 September 2004

Welsh: amrywiaeth

English: variety

Status C

Subject: Law

Part of speech: Noun, Feminine, Singular

Definition: ansawdd o fod yn amrywiol etc.

Last updated: 7 September 2004

Welsh: amrywiaeth ac arwynebedd digonol o gynefinoedd

English: sufficient diversity and area of habitats

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Last updated: 16 April 2012

Welsh: amrywiaeth ac arwynebedd digonol o gynefinoedd

English: sufficient diversity and area of habitats

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Last updated: 16 April 2012

Welsh: amrywiaeth acwstig

English: acoustic diversity

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Notes: Yng nghyd-destun sŵn amgylcheddol.

Last updated: 3 February 2022

Welsh: amrywiaeth acwstig

English: acoustic diversity

Status B

Subject: Planning

Part of speech: Noun, Masculine, Singular

Notes: Yng nghyd-destun sŵn amgylcheddol.

Last updated: 3 February 2022

Welsh: amrywiaethau

English: varieties

Status C

Subject: Law

Part of speech: Noun, Plural

Definition: ansawdd o fod yn amrywiol etc.

Last updated: 7 September 2004

Welsh: amrywiaethau

English: varieties

Status C

Subject: Law

Part of speech: Noun, Plural

Definition: ansawdd o fod yn amrywiol etc.

Last updated: 7 September 2004

Welsh: amrywiaeth enetig

English: genetic diversity

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Yr holl amrywiad genetig mewn unigolyn, poblogaeth neu rywogaeth.

Last updated: 22 April 2025

Welsh: amrywiaeth enetig

English: genetic diversity

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Yr holl amrywiad genetig mewn unigolyn, poblogaeth neu rywogaeth.

Last updated: 22 April 2025

Welsh: amrywiaeth fiolegol

English: biological diversity

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Context: Er bod y dystiolaeth ddiweddaraf yn dangos rhai tueddiadau cadarnhaol mewn perthynas ag amgylchedd Cymru, mae'r asesiad cynhwysfawr diwethaf o adnoddau naturiol Cymru yn dangos bod amrywiaeth biolegol yn dirywio'n gyffredinol, ac nid oes modd dweud bod gan unrhyw ecosystem yng Nghymru yr holl nodweddion sydd eu hangen i wrthsefyll hyn.

Last updated: 25 July 2019

Welsh: amrywiaeth fiolegol

English: biological diversity

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Context: Er bod y dystiolaeth ddiweddaraf yn dangos rhai tueddiadau cadarnhaol mewn perthynas ag amgylchedd Cymru, mae'r asesiad cynhwysfawr diwethaf o adnoddau naturiol Cymru yn dangos bod amrywiaeth biolegol yn dirywio'n gyffredinol, ac nid oes modd dweud bod gan unrhyw ecosystem yng Nghymru yr holl nodweddion sydd eu hangen i wrthsefyll hyn.

Last updated: 25 July 2019

Welsh: amrywiaeth o dai newydd

English: variety of new housing

Status A

Subject: Housing

Part of speech: Noun, Feminine, Singular

Last updated: 25 May 2012

Welsh: amrywiaeth o dai newydd

English: variety of new housing

Status A

Subject: Housing

Part of speech: Noun, Feminine, Singular

Last updated: 25 May 2012

Welsh: Amrywiaeth Oedran yn y Gweithle

English: Age Diversity in Employment

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: WHC(2000)19

Last updated: 14 January 2003

Welsh: Amrywiaeth Oedran yn y Gweithle

English: Age Diversity in Employment

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: WHC(2000)19

Last updated: 14 January 2003

Welsh: amrywiaeth o ran rhywedd

English: gender diversity

Status A

Subject: General

Part of speech: Noun, Masculine, Singular

Context: Increasing the gender diversity of the Senedd is expected to lead to more effective representation.

Last updated: 10 July 2024

Welsh: amrywiaeth o ran rhywedd

English: gender diversity

Status A

Subject: General

Part of speech: Noun, Masculine, Singular

Context: Increasing the gender diversity of the Senedd is expected to lead to more effective representation.

Last updated: 10 July 2024

Welsh: amrywiant

English: variance

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last updated: 19 July 2005

Welsh: amrywiant

English: variance

Status B

Subject: ICT

Part of speech: Noun, Masculine, Singular

Last updated: 19 July 2005

Welsh: amrywiant samplu

English: sampling variance

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Context: Y gymhareb rhwng amrywiant samplu y sampl cymhleth a sampl syml a ddewiswyd ar hap o'r un maint yw'r 'deff' (design effect - sy'n cyfateb i'r deft wedi ei sgwario).

Last updated: 9 August 2017

Welsh: amrywiant samplu

English: sampling variance

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Context: Y gymhareb rhwng amrywiant samplu y sampl cymhleth a sampl syml a ddewiswyd ar hap o'r un maint yw'r 'deff' (design effect - sy'n cyfateb i'r deft wedi ei sgwario).

Last updated: 9 August 2017

Welsh: amrywio

English: vary

Status A

Subject: Law

Part of speech: Verb

Definition: peri (i rywbeth) newid

Context: Caiff y landlord amrywio’r rhent sy’n daladwy o dan gontract diogel drwy roi hysbysiad i ddeiliad y contract yn nodi rhent newydd sydd i gael effaith ar y dyddiad a bennir yn yr hysbysiad.

Last updated: 16 November 2021

Welsh: amrywio

English: vary

Status A

Subject: Law

Part of speech: Verb

Definition: peri (i rywbeth) newid

Context: Caiff y landlord amrywio’r rhent sy’n daladwy o dan gontract diogel drwy roi hysbysiad i ddeiliad y contract yn nodi rhent newydd sydd i gael effaith ar y dyddiad a bennir yn yr hysbysiad.

Last updated: 16 November 2021

Welsh: amrywio buddiant trethadwy

English: variation of chargeable interest

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 16 August 2016

Welsh: amrywio buddiant trethadwy

English: variation of chargeable interest

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 16 August 2016

Welsh: amrywio gwarediadau testamentaidd

English: variation of testamentary dispositions

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 17 August 2016

Welsh: amrywio gwarediadau testamentaidd

English: variation of testamentary dispositions

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 17 August 2016

Welsh: amrywioldeb

English: variability

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Definition: In statistics, the degree to which a set of scores is dispersed or scattered.

Last updated: 14 July 2006

Welsh: amrywioldeb

English: variability

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Definition: In statistics, the degree to which a set of scores is dispersed or scattered.

Last updated: 14 July 2006

Welsh: amrywioldeb samplu

English: sampling variability

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last updated: 14 July 2006

Welsh: amrywioldeb samplu

English: sampling variability

Status C

Subject: Finance and statistics

Part of speech: Noun, Masculine, Singular

Last updated: 14 July 2006

Welsh: amrywio les

English: variation of a lease

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 16 August 2016

Welsh: amrywio les

English: variation of a lease

Status B

Subject: Law

Notes: Term o Fil Treth Trafodiadau Tir a Gwrthweithio Osgoi Trethi Datganoledig (Cymru) 2016.

Last updated: 16 August 2016

Welsh: amrywiolyn

English: variant

Status C

Subject: Law

Part of speech: Noun, Masculine, Singular

Last updated: 7 September 2004

Welsh: amrywiolyn

English: variant

Status C

Subject: Law

Part of speech: Noun, Masculine, Singular

Last updated: 7 September 2004

Welsh: amrywiolyn

English: variant

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: amrywiolion

Definition: Organeb neu feirws sy'n wahanol yn enynnol wrth organebau neu feirysau eraill o'r un rhywogaeth neu linach, yn sgil mwtaniad yn y dilyniant genynnol

Last updated: 7 June 2021

Welsh: amrywiolyn

English: variant

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: amrywiolion

Definition: Organeb neu feirws sy'n wahanol yn enynnol wrth organebau neu feirysau eraill o'r un rhywogaeth neu linach, yn sgil mwtaniad yn y dilyniant genynnol

Last updated: 7 June 2021

Welsh: Amrywiolyn sy’n Destun Ymchwiliad

English: Variant Under Investigation

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: Amrywiolion sy’n Destun Ymchwiliad

Definition: Organeb neu feirws newydd sy'n wahanol yn enynnol wrth organebau neu feirysau eraill o'r un rhywogaeth neu linach, yn sgil mwtaniad yn y dilyniant genynnol.

Notes: Defnyddir yr acronym VUI, gan gynnwys yn y gyfundrefn enwi amrywiolion o’r fath (ee VUI-202012/01). Gweler hefyd Variant of Concern / Amrywiolyn sy’n Peri Pryder.

Last updated: 14 December 2021

Welsh: Amrywiolyn sy’n Destun Ymchwiliad

English: VUI

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Plural: Amrywiolion sy’n Destun Ymchwiliad

Definition: Organeb neu feirws newydd sy'n wahanol yn enynnol wrth organebau neu feirysau eraill o'r un rhywogaeth neu linach, yn sgil mwtaniad yn y dilyniant genynnol, ac y mae gwyddonwyr yn ymchwilio iddo.

Notes: Dyma’r acronym a ddefnyddir am Variant Under Investigation. Defnyddir y ffurf VUI yn y gyfundrefn enwi amrywiolion o’r fath (ee VUI-202012/01). Gweler hefyd VOC / Amrywiolyn sy’n Peri Pryder.

Last updated: 14 December 2021

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