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demantoid

[dih-man-toid] /dɪˈmæn tɔɪd/
noun, Mineralogy.
1.
a brilliant green variety of andradite garnet, used as a gem.
Also called Uralian emerald.
Origin of demantoid
1890-1895
1890-95; < German, equivalent to (obsolete) Demant diamond (< Middle High German diemant < Old French diamant) + -oid -oid
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for demantoid

demantoid

/dɪˈmæntɔɪd/
noun
1.
a bright green variety of andradite garnet
Word Origin
C19: from German, from obsolete Demant diamond, from Old French diamant + -oid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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