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[sahy-koh-fiz-iks] /ˌsaɪ koʊˈfɪz ɪks/
noun, (used with a singular verb)
the branch of psychology that deals with the relationships between physical stimuli and resulting sensations and mental states.
Origin of psychophysics
From the German word Psychophysik, dating back to 1875-80. See psycho-, physics
Related forms
[sahy-koh-fiz-i-kuh l] /ˌsaɪ koʊˈfɪz ɪ kəl/ (Show IPA),
psychophysic, adjective
psychophysically, adverb
[sahy-koh-fiz-uh-sist] /ˌsaɪ koʊˈfɪz ə sɪst/ (Show IPA),
noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for psychophysics
Historical Examples
  • The relations so determined constitute the newest of the sciences, psychophysiology or psychophysics.

    Herbert Spencer J. Arthur Thomson
British Dictionary definitions for psychophysics


(functioning as sing) the branch of psychology concerned with the relationship between physical stimuli and the effects they produce in the mind
Derived Forms
psychophysical, adjective
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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psychophysics in Medicine

psychophysics psy·cho·phys·ics (sī'kō-fĭz'ĭks)
The branch of psychology that deals with the relationships between physical stimuli and sensory response.

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