Other forms: somen; somans
Soman is a deadly substance that was created for chemical warfare. Because it's toxic when people inhale it, soman is considered to be a weapon of mass destruction.
Like mustard gas or sarin, soman is a nerve agent that was developed for use in wars to kill many people all at once. It's a chemical that harms and begins to break down the nervous system when it's breathed in. Soman was invented by German biochemists during World War II, but it was never used in that conflict, and in 1993 it became illegal to produce or keep it.