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A plural of calx.
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.


1. (Anatomy) a plural of calx
2. (Elements & Compounds) a plural of calx
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



n., pl. calx•es, cal•ces (ˈkæl siz)
the oxide or ashy substance that remains after metals, minerals, etc., have been thoroughly burned.
[1350–1400; Middle English cals < Old French < Latin calx lime; see calcium]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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As reported by Pasig City Police, Rosello and another classmate Hanah Jane Calces were on the stairs, taking "selfies" when the accident happened.