完かん新しん世せい

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Meanings

1

noun

Holocene epoch

Geological term for the current epoch, beginning after the last Ice Age.

世generation, world, society

更こう新しん世せい
Pleistocene epoch, the geological epoch immediately before the Holocene.

From 完 (complete) + 新 (new) + 世 (epoch), a calque of 'Holocene' (from Greek 'holos' whole + 'kainos' new).