Middle English obsecracioun, from Latin obsecration-, obsecratio, from obsecratus (past participle of obsecrare to beseech) + -ion-, -io -ion
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“Obsecration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/obsecration. Accessed 4 Feb. 2023.
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