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1709, in the meaning defined above
in part borrowed from Latin pulsant-, pulsans, present participle of pulsāre "to strike with repeated blows, beat"; in part from pulse entry 1 + -ant entry 2 — more at pulsate
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“Pulsant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pulsant. Accessed 3 Jun. 2020.
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