Definition of "radiolucent" []

• Allowing the passage of x-rays or other radiation; not radiopaque. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Hair beads are radiolucent and thus are difficult to differentiate on radiologic scans from the adjacent soft tissue — the air-filled hollow core may be mistaken for benign air that became entrapped at the time of injury."
• "The radiolucent area is reflective of the amount of fat in the breast."
• "Mammographic density refers to the amount of white or radiodense area compared to the amount of grey or radiolucent area on a mammogram."