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A small electric heating element in an internal-combustion engine that facilitates starting by preheating the air in a cylinder and is used especially in diesel engines.
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.
(Automotive Engineering) one of usually four plugs fitted to the cylinder block of a diesel engine that warms the engine chamber to facilitate starting in cold weather. Also called: heater plug
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a device with a heating element that spreads fuel combustion at each cylinder of a cold diesel engine.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.