circa 1814, in the meaning defined above
German Pyromorphit, from Greek pyr- + morphē form
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Cite this Entry
“Pyromorphite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyromorphite. Accessed 18 May. 2022.
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Britannica.com: Encyclopedia article about pyromorphite
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