antithyroid

adjective
an·​ti·​thy·​roid | \ˌan-ti-ˈthī-ˌrȯid \

Definition of antithyroid 

: able to counteract excessive thyroid activity antithyroid drugs

First Known Use of antithyroid

1896, in the meaning defined above

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The first known use of antithyroid was in 1896

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antithyroid

adjective
an·​ti·​thy·​roid | \-ˈthī-ˌrȯid \

Medical Definition of antithyroid 

: able to counteract excessive thyroid activity antithyroid drugs

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