Definition of antediluvian in English:

antediluvian

Syllabification: an·te·di·lu·vi·an
Pronunciation: /ˌantēdəˈlo͞ovēən
 
/

adjective

[attributive]
  • 1Of or belonging to the time before the biblical Flood: gigantic bones of antediluvian animals
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    • In addition, the parallels between the Sumerian and biblical antediluvian data open up the possibility of establishing chronological correlations between the rest of the Kings List and the book of Genesis.
    • An antediluvian civilization, thriving and technologically advanced prior to the flood, managed to survive the flood due to their technological prowess.
    • One even tells its followers that they may relive former lives, back into antediluvian periods.
  • 1.1chiefly • humorous Ridiculously old-fashioned: they maintain antediluvian sex-role stereotypes
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    • In the new dispensation, religion is being hemmed into a narrow, private world, as if a public commitment to certain beliefs is old-fashioned and antediluvian, like wearing your shirt inside your drawers.
    • But I cannot see the House of Lords' decision as some sort of cataclysm which has put a quarter of a century's family jurisprudence into antediluvian obsolescence.
    • ‘The newspaper industry prices itself in a way that is at best archaic and at worst antediluvian,’ he says.

Origin

mid 17th century: from ante- + Latin diluvium 'deluge' + -an.

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Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody