Definition of "insecticidal" [insecticidal]

• Of or relating to insecticide (adjective)

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• "Ninety percent has an herbicide or insecticidal variety."
• "Spraying fields and swamps is when you get the problems with toxicity to higher organisms and insecticidal resistance, which is obviously bad."
• "The seed contains a gene from a common soil microorganism called Bacillus thuringiensis, or Bt, from which crop biotechnology has been used to mine several genes for making insecticidal proteins."