1849, in the meaning defined above
German Mikroklin, from mikr- micr- + Greek klinein to lean — more at lean
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Cite this Entry
“Microcline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microcline. Accessed 18 Aug. 2022.
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Britannica.com: Encyclopedia article about microcline
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