chlorpyrifos

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noun chlor·pyr·i·fos \-ˈpir-ə-fäs, -ˈpī-rə\

Definition of chlorpyrifos

  1. :  a toxic crystalline organophosphate pesticide C9H11Cl3NO3PS that inhibits acetylcholinesterase and is used to control insect pests and ticks

Recent Examples of chlorpyrifos from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chlorpyrifos.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of chlorpyrifos

chlor- + pyridine + -fos (alteration of phosphorus)


Medical Dictionary

chlorpyrifos

play
noun chlor·pyr·i·fos \-ˈpir-ə-fäs, -ˈpī-rə-\

Medical Definition of chlorpyrifos

  1. :  a toxic crystalline organophosphate pesticide C9H11Cl3NO3PS that inhibits acetylcholinesterase and is used to control insect pests and ticks


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