1. (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
   - optical density, photographic density, absorbance

Type of: denseness, density

• abdicator
• abdomen
• abdominal
• abdominal actinomycosis
• abdominal aorta
• abdominal aortic aneurysm
• abdominal breathing
• abdominal cavity
• abdominal delivery
• abdominal external oblique muscle
• abdominal muscle
• abdominal nerve plexus
• abdominal pregnancy
• abdominal wall
• abdominocentesis
• abdominoplasty
• abdominous
• abdominousness
• abdominovesical
• abduce
• abducens
• abducens muscle
• abducens nerve
• abducent
• abducent nerve