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C–4

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noun \ˈsē-ˈfȯr\

Definition of C–4

: a high explosive composed of various chemicals that make it moldable and plastic Before it was detonated, I held a piece of C-4 plastic explosive about the size of a baseball. It felt slightly greasy and granular, but otherwise indistinguishable from my daughter's Play-Doh. — Eric Schlosser

First Known Use of c–4

1964

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