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noun
mass noun1Geology
A highly basic form of gabbro containing anorthite or bytownite with augite.- 1.1count noun A stony meteorite which contains no chondrules and consists mainly of anorthite and augite.
Origin
Mid 19th century from Greek eukritos ‘easily discerned’, from eu- ‘well’ + kritos ‘separated’ (from krinein ‘to separate’).
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