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A clear or translucent, deep orange-red to brownish-red variety of chalcedony. Also called sardius.
[Middle English sarde, from Old French, from Latin sarda, perhaps from Sardīs, Sardis.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Minerals) an orange, red, or brown variety of chalcedony, used as a gemstone. Formula: SiO2. Also called: sardine
[C14: from Latin sarda, from Greek sardios stone from Sardis]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a reddish brown chalcedony, used as a gem.
[1350–1400; Middle English < Latin sarda < Greek sárdios (stone) of Sardis]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.