Definition of heptachlor in US English:

heptachlor

noun

  • A chlorinated hydrocarbon used as an insecticide.

    Chemical formula: C₁₀H₅Cl₇

    • ‘Snyder and Mulder reported that exposure of Homarus americanus larvae to the cyclodiene pesticide heptachlor can cause a delay in molting.’
    • ‘The company that manufactured and sold the pesticides chlordane and heptachlor, the Velsicol Chemical Company of Chicago, threatened to sue Houghton Mifflin.’
    • ‘The mystery was not what had killed the cows - the insecticides had done that - but ‘who is safeguarding the consumer to see that no residues of dieldrin or heptachlor are appearing in the milk?’’
    • ‘The sequence of events made no sense: the cows had died several months after the last application of insecticide, but heptachlor volatilized in a few weeks.’
    • ‘According to Rosene, agricultural employees harassed him by following him, bugging his phone, and laying a trail of heptachlor between his motel room and car.’

Pronunciation

heptachlor

/ˈheptəˌklôr/