co·par·ce·nar·y (k?-pär?s?-n?r??)n. pl. co·par·ce·nar·ies 1. Joint inheritance or heirship of property. Also called parcenary.2. Joint ownership.co·par?ce·nar?y adj.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.coparcenary , coparcenery or coparcenyn (Law) law a form of joint ownership of property, esp joint heirship. Also called: parcenary Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014co?par?ce?nar?y (ko??p?r s??n?r i) n. joint ownership of inherited property. [1495?1505] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.