1715, in the meaning defined above
Latin prolatus (past participle of proferre to bring forward, extend) from pro- forward + latus, past participle of ferre to carry — more at bear, tolerate
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“Prolate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prolate. Accessed 3 Mar. 2021.
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