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

Type of: denseness, density

Encyclopedia: Optical density

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optic tract
optical
optical aberration
optical activity
optical art
optical bench
optical character recognition
optical condenser
optical crown
optical crown glass
optical density
optical device
optical disc
optical disk
optical fiber
optical fibre
optical flint
optical fusion
optical glass
optical illusion
optical instrument