phos·​pham·​i·​don | \fäsˈfaməˌdän\
plural -s

Definition of phosphamidon 

: a contact and systemic organophosphorus insecticide and miticide C10H19ClNO5P

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First Known Use of phosphamidon

1960, in the meaning defined above

History and Etymology for phosphamidon

phosph- + amid- + -on entry 1

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The first known use of phosphamidon was in 1960

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to enclose within walls

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