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1620, in the meaning defined at sense 1
Middle French, from Late Latin ampliation-, ampliatio, from Latin, postponement of the decision of a cause, from ampliatus (past participle of ampliare to enlarge, postpone the decision of) + -ion-, -io -ion
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“Ampliation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ampliation. Accessed 27 May. 2020.
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