Etymology

antediluvian

an·te·di·luv·i·an
A1N1T1E1D2I1L1U1V4I1A1N1

Today it means: Belonging or pertaining to, or existing in, the time prior to the great flood described in Genesis, or (by extension) to a great or destructive flood or deluge described in other mythologies. Full definition →

Proto-Indo-European *lewh₃-
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The story

  1. Proto-Indo-European · derived from*lewh₃-“to wash”
  2. English todayantediluvian

PIE word *dwís From ante- (prefix meaning ‘prior to in time’) + Latin dīluvium (“a flood”) + -an (suffix meaning ‘of or pertaining to’ forming adjectives; and forming agent nouns), referring the story of Noah’s Ark, through which God rescues Noah, his family, and examples of all the world’s animals from the great flood, which is related in Genesis 6–9 of the Bible. Dīluvium is derived from dīluō (“to wash away”) (from dis- (prefix meaning ‘apart, asunder, in two’) + lavō (“to wash”) (ultimately from Proto-Indo-European *lewh₃- (“to wash”))) + -ium (suffix forming abstract nouns). The English word is analyzable as ante- + diluvian. Adjective sense 2 (“long extinct”) is from the fact that such animals and plants were originally believed to have perished in the biblical flood referred to above.

Words from the same roots

Proto-Indo-European*lewh₃- all →

lyelave

Etymology from Wiktionary, CC BY-SA 4.0.