in·tra·pre·neur (?n?tr?-pr?-nûr?)n. A person within a large corporation who takes direct responsibility for turning an idea into a profitable finished product through assertive risk taking and innovation.[Blend of intra- and entrepreneur.]in?tra·pre·neur?i·al 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.intrapreneurial (??ntr?pr??n??r??l) adjrelating to, being, or consisting of intrapreneursCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014