Zyklon A Zyklon A /ˈzaɪklɒn ˈeɪ/

noun

1. A pesticide with methyl cyanoformate as an active ingredient.  ( Zyklon A )
   a pesticide with methyl cyanoformate as an active ingredient.
    Research at Degesch of Germany led to the development of Zyklon A, a pesticide which released hydrogen cyanide upon exposure to water and heat.
   Research at Degesch of Germany led to the development of Zyklon A, a pesticide which released hydrogen cyanide upon exposure to water and heat.