o·do·graph (??d?-gr?f?)n. An instrument for recording the distance and course traveled by a vehicle.[Greek hodos, journey + -graph.]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.odographa device that records the distance traveled; a recording odometer or pedometer.See also: Distance-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.