chlorothalonil
[ klawr-uh-thal-uh-nil, klohr- ]
/ ˌklɔr əˈθæl ə nɪl, ˌkloʊr- /
noun Chemistry.
a crystalline compound, C8Cl4N2, used as a fungicide on vegetable crops, peanuts, and lawns, and as a preservative in adhesives and paints.