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Noun: optical activity
  1. (chemistry, physics) a property caused by asymmetrical molecular or crystal structure that enables a compound or crystal to rotate the plane of incident polarized light
    - optical rotation

Encyclopedia: Optical activity

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optic chiasma
optic cup
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optic tract
optical
optical aberration
optical activity
optical art
optical bench
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optical condenser
optical crown
optical crown glass
optical density
optical device
optical disc
optical disk