matri-

matri-

or matro- or matr-
pref.
Mother; maternal: matrilineal.

[Latin mātri-, from māter, mātr-, mother; see mater.]
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.

matri-

combining form
mother or motherhood: matriarchy.
[from Latin māter mother]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

matri-

a combining form meaning “mother”: matrilineal.
[< Latin, comb. form of māter mother1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.