TermCymru

Results are displayed in English alphabetical order A-Z

English: Objective 1 Steering Group

Welsh: Grŵp Llywio Amcan 1

Status C

Subject: Europe

Part of speech: Noun, Masculine, Singular

Last Updated: 18 January 2007

English: Objective 2 & Objective 2 Transitional

Welsh: Amcan 2 ac Amcan 2 Trosiannol

Status A

Subject: Europe

Part of speech: Noun, Masculine, Singular

Last Updated: 24 March 2014

English: objective and action planning sheet

Welsh: taflen amcanion a chynllun gweithredu

Status C

Subject: Education

Part of speech: Noun, Feminine, Singular

Last Updated: 10 March 2009

English: objective criteria

Welsh: meini prawf gwrthrychol

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Last Updated: 29 July 2004

English: objective estimation technique

Welsh: techneg amcangyfrif gwrthrychol

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: technegau amcangyfrif gwrthrychol

Context: Ystyr “asesu” ac “asesiad” (“assessment”) yw asesu a wneir drwy gyfrwng mesuriadau sefydlog, mesuriadau dangosol, modelu neu dechnegau amcangyfrif gwrthrychol.

Notes: Term o faes mesur ansawdd aer. Daw'r frawddeg gyd-destunol o Reoliadau Safonau Ansawdd Aer (Cymru) 2010.

Last Updated: 16 September 2024

English: Objective for Children

Welsh: Amcan i Blant

Status C

Subject: Social services

Part of speech: Noun, Masculine, Singular

Last Updated: 3 July 2002

English: Objective One International Trade Development Programme

Welsh: Rhaglen Datblygu Masnach Ryngwladol Amcan Un

Status B

Subject: Europe

Part of speech: Noun, Feminine, Singular

Last Updated: 8 January 2004

English: objectivity

Welsh: gwrthrychedd

Status C

Subject: Politics

Part of speech: Noun, Masculine, Singular

Definition: One of the Civil Service core values (integrity, honesty, objectivity and impartiality).

Last Updated: 30 August 2007

English: object menu

Welsh: dewislen gwrthrychau

Status B

Subject: ICT

Part of speech: Noun, Feminine, Singular

Last Updated: 19 July 2005

English: object of reference

Welsh: gwrthrych cyfeirio

Status B

Subject: Education

Part of speech: Noun, Plural

Plural: gwrthrychau cyfeirio

Definition: Yn achos babanod a phlant bach, gwrthrych a ddefnyddir fel dull o gyfathrebu, efallai ar y cyd â geiriau. Er enghraifft llyfr ar gyfer amser stori, gogls ar gyfer esgus nofio, stethosgop ar gyfer dynwared bod yn feddyg.

Notes: Term a ddefnyddir yn neunyddiau'r cwricwlwm.

Last Updated: 20 August 2025

English: objector

Welsh: gwrthwynebydd

Status C

Subject: Planning

Part of speech: Noun, Masculine, Singular

Last Updated: 23 July 2003

English: object permanence

Welsh: sefydlogrwydd gwrthrych

Status A

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Y syniad nad yw gwrthrych yn diflannu pan nad ydyw'n cael ei weld.

Notes: Term o faes seicoleg.

Last Updated: 10 October 2024

English: obligated tonnage

Welsh: tunelledd gorfodol

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Last Updated: 17 October 2005

English: obligation

Welsh: rhwymedigaeth

Status A

Subject: Law

Part of speech: Noun, Feminine, Singular

Plural: rhwymedigaethau

Definition: peth y mae person yn rhwym o dan y gyfraith i'w wneud

Context: i fodloni rhwymedigaeth gyfreithiol, gan gynnwys mynd i’r llys neu fodloni amodau mechnïaeth, neu i gymryd rhan mewn achos cyfreithiol;

Notes: Gweler "atebolrwydd: liability"

Last Updated: 16 November 2021

English: obligations

Welsh: rhwymedigaethau

Status C

Subject: Law

Part of speech: Noun, Plural

Definition: legal duties

Last Updated: 23 February 2004

English: obligatory light

Welsh: golau gorfodol

Status B

Subject: Justice and order

Part of speech: Noun, Masculine, Singular

Last Updated: 30 August 2012

English: obliquely

Welsh: ar letraws

Status C

Subject: Environment

Part of speech: Adjective

Last Updated: 27 February 2006

English: obliterate

Welsh: difodi

Status A

Subject: Planning

Part of speech: Verb

Definition: Yng nghyd-destun y gyfundrefn ar gyfer rheolaethu hysbysebion, gorchuddio, difetha neu gael gwared ar blacard neu boster fel nad yw’n gallu arddangos hysbyseb mwyach.

Last Updated: 18 February 2026

English: OBMCW

Welsh: Swyddfa'r Gweinidog Busnes a'r Prif Chwip

Status C

Subject: Welsh Government posts and departments

Part of speech: Noun, Feminine, Singular

Definition: OBMCW

Last Updated: 8 June 2007

English: OBR

Welsh: Y Swyddfa Cyfrifoldeb Cyllidebol

Status C

Subject: Finance and statistics

Part of speech: Proper noun, Feminine, Singular

Definition: Office for Budget Responsibility

Context: Teitl cwrteisi.

Last Updated: 16 May 2013

English: obscene

Welsh: anllad

Status B

Subject: Law

Part of speech: Adjective

Notes: Cymharer â’r term indecent / anweddus.

Last Updated: 14 January 2025

English: obscenity

Welsh: anlladrwydd

Status B

Subject: Law

Part of speech: Noun, Masculine, Singular

Notes: Cymharer â’r term indecency / anwedduster.

Last Updated: 13 January 2025

English: observation

Welsh: arsylwi

Status C

Subject: Education

Part of speech: Verb

Last Updated: 22 January 2009

English: observation training

Welsh: hyfforddiant mewn arsylwi

Status C

Subject: Education

Part of speech: Noun, Masculine, Singular

Last Updated: 22 January 2009

English: Observatory for a Sustainable Knowledge based Region

Welsh: Arsyllfa ar gyfer Rhanbarth Cynaliadwy sy'n Seiliedig ar Wybodaeth

Status C

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Definition: OSKaR. Led by Cardiff Business School.

Last Updated: 11 October 2004

English: Observatory of Innovation

Welsh: Arsyllfa Arloesedd

Status A

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Last Updated: 4 February 2009

English: Observing Children

Welsh: Arsylwi ar Blant

Status A

Subject: Education

Part of speech: Verb

Definition: Canllawiau'r Cyfnod Sylfaen, Ionawr 2008. Teitl dogfen WAG.

Last Updated: 26 January 2009

English: obsessive-compulsive disorder

Welsh: anhwylder obsesiynol-gorfodaethol

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Definition: Cyflwr iechyd meddwl lle bydd gan berson feddyliau obsesiynol ac ymddygiadau gorfodaethol. Yn y cyd-destun hwn, obsesiwn yw syniad dieisiau neu amhleserus sy'n dod i'r meddwl dro ar ôl tro gan greu teimladau o orbryder, anesmwythdra neu ffieidd-dod. Yn y cyd-destun hwn, gorfodaeth yw ymddygiad neu weithred feddyliol ailadroddus y teimlir sydd angen ei gyflawni er mwyn lleddfu dros dro'r teimladau amhleserus a ysgogwyd gan y syniad obsesiynol.

Last Updated: 10 October 2024

English: obsolete holding

Welsh: daliad darfodedig

Status B

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Plural: daliadau darfodedig

Context: Cafodd y gofrestr ddaliadau ei hadolygu yn 2014 ac yn sgil hynny, nodwyd bod nifer o ddaliadau darfodedig ac aed ati i’w tynnu o’r gofrestr.

Last Updated: 14 March 2016

English: obsolete provision

Welsh: darpariaeth ddarfodedig

Status B

Subject: Law

Part of speech: Noun, Feminine, Singular

Plural: darpariaethau darfodedig

Definition: Darpariaeth a gafodd ei harfer yn y gorffennol ond nad oes defnydd iddi mwyach, er enghraifft darpariaeth sy’n ymwneud â chorff neu swyddogaeth sydd wedi dod i ben.

Notes: Gellir aralleirio mewn deunyddiau llai ffurfiol, er enghraifft nodiadau esboniadol, a defnyddio ‘darpariaeth nad yw bellach yn arferadwy’.

Last Updated: 14 August 2024

English: obstetrics

Welsh: obstetreg

Status B

Subject: Health

Part of speech: Noun, Feminine, Singular

Last Updated: 6 November 2019

English: obstructive sleep apnoea

Welsh: apnoea cwsg rhwystrol

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 29 October 2025

English: OBTJ

Welsh: troseddau a ddygwyd gerbron y llys

Status C

Subject: Justice and order

Part of speech: Noun, Plural

Definition: offences brought to justice

Last Updated: 31 March 2009

English: obvious decay experience

Welsh: profiad o bydredd amlwg

Status C

Subject: Health

Part of speech: Noun, Masculine, Singular

Last Updated: 6 May 2005

English: obvious error provisions

Welsh: darpariaethau camgymeriadau amlwg

Status C

Subject: General

Part of speech: Noun, Plural

Context: In the context of payments to farmers under European regulations.

Last Updated: 27 January 2010

English: Occasional

Welsh: Anghyffredin

Status B

Subject: Environment

Part of speech: Adjective

Notes: Categori sgôr DAFOR (Dominant, Abundant, Frequent, Occasional, Rare), ar gyfer dangos niferoedd rhywogaethau o blanhigion mewn cynefin penodol.

Last Updated: 5 July 2017

English: occluding earwax

Welsh: cwyr sy'n creu rhwystr yn y glust

Status B

Subject: Health

Part of speech: Noun, Masculine, Singular

Notes: Sylwer nad oes angen to bach ar 'cwyr' ond, o'i dreiglo, bod angen to bach ar 'gŵyr'.

Last Updated: 8 September 2020

English: occupancy

Welsh: deiliadaeth

Status C

Subject: Tourism and leisure

Part of speech: Noun, Feminine, Singular

Definition: in titles

Last Updated: 26 January 2009

English: occupancy

Welsh: presenoldeb ar y ffordd

Status B

Subject: Transport

Part of speech: Noun, Masculine, Singular

Definition: The percent of time the detection zone of a detector is occupied by some vehicle.

Notes: Term o faes rheoli llif traffig. Er enghraifft, os yw camera fideo yn recordio darn 2mx2m o ffordd, y ‘presenoldeb ar y ffordd’ yw’r amser y mae unrhyw ran o gerbyd i’w weld ar sgrin y camera hwnnw, fel cyfran o gyfanswm yr amser a dreulir yn ffilmio .

Last Updated: 27 November 2015

English: occupancy cascade

Welsh: rhaeadr feddiannaeth

Status C

Subject: Planning

Part of speech: Noun, Feminine, Singular

Last Updated: 20 September 2005

English: occupancy conditions

Welsh: amodau meddiannaeth

Status C

Subject: Planning

Part of speech: Noun, Plural

Last Updated: 23 July 2003

English: occupancy level

Welsh: lefel defnydd

Status B

Subject: Economic development

Part of speech: Noun, Feminine, Singular

Plural: lefelau defnydd

Notes: Yng nghyd-destun canllawiau i weithleoedd yn sgil COVID-19.

Last Updated: 25 June 2020

English: occupancy rate

Welsh: graddfa feddiannaeth

Status C

Subject: Planning

Part of speech: Noun, Feminine, Singular

Last Updated: 23 July 2003

English: occupancy rating

Welsh: sgôr gyfanheddu

Status B

Subject: Finance and statistics

Part of speech: Noun, Feminine, Singular

Plural: sgoriau cyfanheddu

Definition: Yng nghyd-destun ystadegau, gwerth a gyfrifir drwy gyfuno data am nifer ystafelloedd mewn eiddo â data am nifer preswylwyr yr eiddo hwnnw. Mae hyn yn rhoi gwerth o -2, -1, 0, +1 neu +2, gan amlaf, a defnyddir yr wybodaeth hon i roi amcan a ydy eiddo mewn ardaloedd penodol yn dueddol o fod yn rhy llawn neu’n rhy wag.

Last Updated: 26 January 2023

English: occupancy ratio

Welsh: cymhareb feddiannaeth

Status C

Subject: Planning

Part of speech: Noun, Feminine, Singular

Last Updated: 23 July 2003

English: occupancy rules

Welsh: rheolau meddiannaeth

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Last Updated: 27 January 2010

English: occupancy rules

Welsh: rheolau meddiannu tir

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Context: Yng nghyd-destun tir yn unig.

Last Updated: 27 January 2010

English: occupancy survey

Welsh: arolwg deiliadaeth

Status C

Subject: Tourism and leisure

Part of speech: Noun, Masculine, Singular

Definition: Dyna arferiad Croeso Cymru a'r Bwrdd Croeso o'i flaen.

Last Updated: 26 January 2009

English: occupant

Welsh: meddiannydd

Status C

Subject: Housing

Part of speech: Noun, Masculine, Singular

Last Updated: 23 September 2005

English: occupation

Welsh: meddiannu

Status A

Subject: Housing

Part of speech: Verb

Definition: meddu'n gorfforol ar eiddo a'i reoli.

Context: Rhaid i’r landlord o dan gontract meddiannaeth hysbysu deiliad y contract o gyfeiriad y caiff deiliad y contract anfon dogfennau a fwriedir ar gyfer y landlord iddo, a hynny cyn diwedd y cyfnod o 14 diwrnod sy’n dechrau â dyddiad meddiannu’r contract.

Notes: Meddiannaeth' yw'r term arferol am "occupation" ond mae'r berfenw yn gweithio weithiau.

Last Updated: 16 November 2021

TermCymru

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