con·duc·tion (k?n-d?k?sh?n)n. The transmission or conveying of something through a medium or passage, especially the transmission of electric charge or heat through a conducting medium without perceptible motion of the medium itself.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.conduction (k?n?d?k??n) n1. (General Physics) the transfer of energy by a medium without bulk movement of the medium itself: heat conduction; electrical conduction; sound conduction. Compare convection12. (Physiology) the transmission of an electrical or chemical impulse along a nerve fibre3. the act of conveying or conducting, as through a pipe4. (General Physics) physics another name for conductivity1 con?ductional adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014con?duc?tion (k?n?d?k ??n) n. 1. the act of conducting, as of water through a pipe. 2. a. the transfer of heat between two parts of a stationary system at different temperatures. b. conductivity (def. 1). 3. the carrying of sound waves, electrons, heat, or nerve impulses by a nerve or other tissue. [1530?40;