1854, in the meaning defined above
German Millerit, from William H. Miller †1880 English mineralogist
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Cite this Entry
“Millerite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millerite. Accessed 14 Aug. 2022.
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Britannica.com: Encyclopedia article about millerite
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