Definitions:

1. A highly toxic chemical compound, a nerve agent, developed as a chemical weapon, that disrupts the nervous system by inhibiting essential enzymes. NOUN
   • Tabun was one of the first nerve agents developed for warfare.
2. The first known nerve agent, synthesized by German chemists in 1936. NOUN
   • Tabun's high volatility and rapid absorption through the skin make it a particularly dangerous chemical agent.

Synonyms:

• chemical weapon
• nerve agent
• toxic gas