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[dahy-uh-lij] /ˈdaɪ ə lɪdʒ/
noun, Mineralogy
a variety of diopside with a laminated structure, found in gabbro and other igneous rocks.
Origin of diallage
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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for diallage
  • The diallage has been altered largely to a lamellar variety of serpentine which possesses a silvery-gray color and a silky lustre.
British Dictionary definitions for diallage


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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