circa 1846, in the meaning defined above
Late Latin, from Greek monometros, from mon- + metron measure — more at measure
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Cite this Entry
“Monometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monometer. Accessed 2 Aug. 2021.
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Britannica.com: Encyclopedia article about monometer
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