Spontaneity

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google

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mid 17th century: from late Latin spontaneus (from ( sua) sponte ‘of (one's) own accord’) + -ous.


文件:Ety img spontaneity.png

wiktionary

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Compare French spontanéité.


etymonline

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spontaneity (n.)

1650s, from French spontanéité or a native formation from spontaneous + -ity.

取自“https://www.bigphysics.org/index.php?title=Spontaneity&oldid=37788”