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[han-did-nis] /ˈhæn dɪd nɪs/
a tendency to use one hand more than the other.
Origin of handedness
1920-25; handed + -ness Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for handedness


the tendency to use one hand more skilfully or in preference to the other
the property of some chemical substances of rotating the plane of polarized light in one direction rather than another See also dextrorotation, laevorotation
the relation between the vectors of spin and momentum of neutrinos and certain other elementary particles See also helicity
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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handedness in Medicine

handedness hand·ed·ness (hān'dĭd-nĭs)

  1. A preference for using one hand as opposed to the other.

  2. The chirality of a molecule.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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handedness in Science
  1. A preference for using one hand rather than the other to perform most manual tasks and activities. Most people are right-handed. Historically, it has been theorized that handedness is associated with a dominance of the opposite cerebral hemisphere of the brain, but this has not been conclusively proven. Although the scientific basis for handedness is unknown, the fact that left-handed parents more frequently have left-handed offspring suggests at least a partial genetic component. Some experts believe that children are trained to favor one hand over the other (usually the right hand.). Handedness is usually established in the first few years of life.

  2. See chirality.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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