transilluminate

/trænzɪˈluːmɪneɪt/
verb
  1. To shine light through a body part or object to examine its internal structure or detect abnormalities.
    • The doctor used a small flashlight to transilluminate the baby's skull and check for fluid buildup.
    • In biology class, we learned to transilluminate a leaf to see its vein pattern.
    • Veterinarians sometimes transilluminate a horse's leg to find hidden injuries.
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