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词汇 fission
词源

fission n.

1819, "division of a cell or organism," from Latin fissionem (nominative fissio) "a breaking up, cleaving," from past participle stem of findere "to split" (from PIE root *bheid- "to split"). Cognate with Old English bitan "to bite." Nuclear physics sense is 1939. As a verb, from 1929.

updated on May 26, 2017

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更新时间:2025/5/1 9:06:51