pulse·jet
(pŭls′jĕt′)n. A jet engine in which air intake and combustion occur intermittently, producing rapid periodic bursts of thrust.
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.
pulsejet
(ˈpʌlsˌdʒɛt) n (Aeronautics) a type of ramjet engine in which air is admitted through movable vanes that are closed by the pressure resulting from each intermittent explosion of the fuel in the combustion chamber, thus causing a pulsating thrust. Also called: pulsejet engine or pulsojet
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pulse•jet
(ˈpʌlsˌdʒɛt)
n. a jet engine in which combustion occurs intermittently, owing to the opening and shutting of flap valves at the air intake.
[1945–50]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
pulsejet
A jet-propulsion engine containing neither compressor nor turbine. Equipped with valves in the front which open and shut, it takes in air to create thrust in rapid periodic bursts rather than continuously.
Dictionary of Military and Associated Terms. US Department of Defense 2005.