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diallage

[dahy-uh-lij] /ˈdaɪ ə lɪdʒ/
noun, Mineralogy
1.
a variety of diopside with a laminated structure, found in gabbro and other igneous rocks.
Origin of diallage
1795-1805
1795-1805; < French < Greek diallagḗ interchange, change, noun derivative from base of diallássein make an exchange, equivalent to di- di-3 + allássein to change, exchange
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for diallage

diallage

/ˈdaɪəlɪdʒ/
noun
1.
a green or brownish-black variety of the mineral augite in the form of layers of platelike crystals
Word Origin
C19: from Greek diallagē interchange
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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10
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