1. plural of lucency; the quality or state of being lucent; transparency or translucency
Usage: formal; technical
2. areas of reduced density visible on medical imaging, especially X-rays
Usage: medical

Examples

• The glass panels showed varying degrees of lucencies depending on their thickness.
• The radiologist noted several lucencies in the patient’s chest X-ray.
• Different materials exhibit different lucencies when exposed to light.
• The CT scan revealed multiple lucencies in the bone structure.
• The artist experimented with the lucencies of various transparent media.
• Medical students learn to identify abnormal lucencies on radiographic images.