-dromous

-dromous

suff.
Running; moving: catadromous.

[From New Latin -dromus, from Greek -dromos, from dromos, act of running.]
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.

-dromous

adj combining form
moving or running: anadromous; catadromous.
[via New Latin from Greek -dromos, from dromos a running]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

-dromous

a combining form meaning “running,” “following a course” in the direction or manner denoted by the initial element: anadromous.
[< Greek -dromos, akin to drameîn to run; see -ous]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.