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

• nonperson
• nonpersonal
• nonphotosynthetic
• nonphysical
• nonplus
• nonplused
• nonplussed
• nonpoisonous
• nonpolar
• nonpolitical
• nonporous
• nonpregnant
• nonprehensile
• nonprescription
• nonproductive
• nonprofessional
• nonprofit
• nonprofit organisation
• nonprofit organization
• nonprognosticative
• nonprogressive
• nonproliferation
• Nonproliferation Center
• nonproprietary
• nonprotractile