Dictionary

radiopaque

adjective ra·di·opaque \ˌrā-dē-ō-ˈpāk\

Definition of RADIOPAQUE

:  being opaque to various forms of radiation (as X-rays)
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First Known Use of RADIOPAQUE

circa 1923
Medical Dictionary

radiopaque

adjective ra·di·opaque \-ō-ˈpāk\

Medical Definition of RADIOPAQUE

:  being opaque to radiation and especially X-rays <radiopaque dyes>—compare radiolucent

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