• (British) IPA: /ˈɔːθədɒks/
• (America) IPA: /ˈɔːɹθədɑks/

orthodox

1. Conforming to the accepted#Adjective|accepted, established#Adjective|established, or traditional doctrines of a given faith, religion, or ideology. [from 15th c.]

   Antonyms: heretical, heterodox, unorthodox

   • 2005, Alister E McGrath, Iustitia Dei:

     Five important modifications were made by the Pietists to the orthodox doctrine of justification, each corresponding to a distinctive aspect of the movement's agenda.

   • 2009, Andrew Brown, The Guardian, 23 Dec 2009:

     ‘These speakers are academics who have specialised in Islamic sciences and are well respected in scholarly circles. It is grossly unjust to suggest that they belong to some fringe ideology rather than orthodox Islam.’

2. Adhering to whatever is customary, traditional, or generally accepted#Adjective|accepted.

   Synonyms: conservative, conventional

   Antonyms: liberal, outlandish, unorthodox

   • 1838, [Edward Bulwer-Lytton], chapter VII, in Alice or The Mysteries: […] In Three Volumes, volume I, London: Saunders and Otley, […], OCLC 2844716 ↗, book III, [https://babel.hathitrust.org/cgi/pt?id=nyp.33433074938808;view=1up;seq=16 pages 297–298]:

     She tattled on: first to one, then to the other—then to all, till she had tattled herself out of breath;—and then the orthodox half hour had expired, and the bell was rung, and the carriage ordered, and Mrs. Hare rose to depart.

3. (botany) Of pollen, seed, or spores: viable for a long time; viable when dry#Verb|dried to low moisture content#Noun|content.

   Antonyms: recalcitrant

• French: orthodoxe
• German: orthodox
• Italian: ortodosso
• Portuguese: ortodoxo
• Russian: ортодокса́льный
• Spanish: ortodoxo

• French: orthodoxe
• German: orthodox
• Italian: ortodosso
• Portuguese: ortodoxo
• Russian: общепри́нятый
• Spanish: ortodoxo

orthodox

1. (Christianity) Of or pertaining to the Orthodox Churches collectively.
2. (Christianity, loosely) Of or pertaining to a particular Orthodox Church, usually the Eastern Orthodox Church.
3. (Judaism) Of or pertaining to Orthodox Judaism.
4. (Quakerism) Of or pertaining to the Orthodox Quakers, a group of Quakers (subdivided into the Wilburite, Gurneyite and Beaconite branches) who split with the Hicksite Quakers due to favoring adopting mainstream Protestant orthodoxy.
   • 2006, Martha Paxson Grundy, The Evolution of a Quaker Community: Middletown Meeting, Bucks County, Pennsylvania, 1750-1850

     [...which] Doherty hypothesized as the controlling variable for predicting who would become Orthodox or who would be Hicksite.

• French: orthodoxe
• German: orthodox
• Portuguese: ortodoxo
• Russian: правосла́вный
• Spanish: ortodoxo, ortodoxa

• Portuguese: ortodoxo
• Russian: ортодокса́льный (иудаи́зм)

orthodox (plural Orthodox)

1. (uncommon) An Orthodox Christian.
   • 1891, John Scott Keltie, The Statesman's Year-Book, MacMillan and Co., page 854.

     quote en

   • 1984, David Gillard (ed.), British documents on foreign affairs: Reports and papers from the Foreign Office confidential print, Part I: From the mid-nineteenth century to the First World War, Series B: The Near and Middle East, 1856-1914, page 31.

     quote en

2. (rare) An Orthodox Jew.