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microcline

noun
mi·​cro·​cline | \ ˈmī-krō-ˌklīn How to pronounce microcline (audio) \

Definition of microcline

: a triclinic mineral of the feldspar group that is like orthoclase in composition

First Known Use of microcline

1849, in the meaning defined above

History and Etymology for microcline

German Mikroklin, from mikr- micr- + Greek klinein to lean — more at lean

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The first known use of microcline was in 1849

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More from Merriam-Webster on microcline

Britannica.com: Encyclopedia article about microcline

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