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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• handmaiden
• handoff
• handout
• handover
• handrail
• handrest
• hands
• hands down
• hands-off
• hands-on
• handsaw
• handsaw fish
• handsbreadth
• handsel
• handset
• handsewn
• handshake
• handshaking
• handsome
• handsomely
• handsomeness
• handspike
• handspring
• handstamp