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Definition of semtex noun from the Oxford Advanced Learner's Dictionary

semtex

noun
 
/ˈsemteks/
 
/ˈsemteks/
[uncountable]
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  1. a powerful explosive that is used for making bombs, often illegally
    Word Origin1980s: probably a blend of Semtin (the name of a village in the Czech Republic near the place of production) and explosive.
See semtex in the Oxford Advanced American Dictionary
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fever
noun
 
 
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