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circa 1731, in the meaning defined above
New Latin noctambulus "sleepwalker" (earlier noctambulō, with -ōn-, -ō, agent suffix, from Latin noct-, nox night entry 1 + -ambul-, noun derivative of ambulāre "to walk") + -ist entry 1 — more at amble entry 1
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“Noctambulist.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/noctambulist. Accessed 22 Sep. 2020.
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