A highly malleable plastic explosive.
Origin of semtex
- Semt(ín) , village in the Czech Republic where the explosive is manufactured English ex(plosive)
From American Heritage Dictionary of the English Language, 5th Edition
- A genericization of the trademarked name Semtex, derived from the Czech name of the suburb of Pardubice where it was manufactured, SemtÃn, and ex(plosive).