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Related to Semtex: Petn
A highly malleable plastic explosive.
[ Semt(ín), village in the Czech Republic where the explosive is manufactured + English ex(plosive).]
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.
(Firearms, Gunnery, Ordnance & Artillery) a pliable plastic explosive originally produced in the Czech Republic
[C20: originally a trade name]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a plastic explosive that is easily tractable and largely odorless, used esp. by terrorists.
[1980–85; name given by manufacturer; probably from Semtín, town in Czech Republic where made + ex(plosive)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.