Middle English ostensioun, from Middle French ostension, from Latin ostension-, ostensio, from ostensus (past participle of ostendere to show) + -ion-, -io -ion
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“Ostension.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ostension. Accessed 4 Oct. 2023.
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