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optical activity

noun, Physical Chemistry.
the ability of a substance to rotate the plane of polarization of plane-polarized light.
Origin of optical activity
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for optical-activity

optical activity

the ability of substances that are optical isomers to rotate the plane of polarization of a transmitted beam of plane-polarized light
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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optical-activity in Medicine

optical activity n.
The property of an asymmetrical molecule in solution to rotate the plane of polarized light either clockwise or counterclockwise.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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