chelator

noun
che·​la·​tor | \ˈkē-ˌlā-tər, kē-ˈlā-tər also ˈchē-ˌlā-tər, chē-ˈlā-\

Definition of chelator 

: one that chelates especially : a binding agent that suppresses chemical activity by forming chelates

First Known Use of chelator

1957, in the meaning defined above

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The first known use of chelator was in 1957

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chelator

noun
che·​la·​tor | \ˈkē-ˌlāt-ər \

Medical Definition of chelator 

: any of various compounds that combine with metals to form chelates and that include some used medically in the treatment of metal poisoning (as by lead)

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