Definitions

1. adjective

Capable of resisting the penetration of X-rays, as applied in medical imaging to distinguish certain substances from surrounding tissues.

“The radiopaque dye was used to highlight the blood vessels in the patient’s X-ray images.”

2. adjective

Resistant to or opaque to radiation, especially X-rays.

“The new radiopaque coating made the X-ray images clearer and more detailed.”

3. noun

A substance that resists X-rays.

“The radiopaque materials used in medical imaging need to be tested for their safety and efficacy.”