path·way (p?th?w??, päth?-)n.1. A path.2. Physiology a. A course usually followed by a body part or process.b. A chain of nerve fibers along which impulses normally travel.c. A sequence of enzymatic or other reactions by which one biological material is converted to another.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.pathway (?p????we?) n1. another word for path1, path22. a route to or way of access to; way of reaching or achieving something3. (Education) courses taken by a student to gain entry to a higher course or towards a final qualification4. (Biochemistry) biochem a chain of reactions associated with a particular metabolic processCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014path?way (?pæ??we?, ?p??-) n. 1. a path, course, route, or way. 2. a sequence of reactions, usu. controlled and catalyzed by enzymes, by which one organic substance is converted to another. [1530?40] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.