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[ik-sten-si-tee] /ɪkˈstɛn sɪ ti/
the quality of having extension.
Psychology. the attribute of sensation from which the perception of spatial extension is developed.
Origin of extensity
1825-35; < Latin extēns(us) (see extensive) + -ity Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for extensity
Historical Examples
  • Resistance to change of extensity: compressibility, porosity, adhesion, cohesion.

    The School System of Norway David Allen Anderson
  • Infinity is a relative term, and in fact, decreases in extensity in the proportion that the consciousness expands and comprehends.

    The Mystery of Space Robert T. Browne
  • Hence is derived the coloured presentation of Vision to which the character of extensity attaches.

  • As the Thinker's consciousness expands the extensity of the manifested universe decreases.

    The Mystery of Space Robert T. Browne
  • The extensity of a sensation depends on the number of nerve endings stimulated.

    The Mind and Its Education George Herbert Betts
  • Space, in its extensity, cannot transcend life; for it is the path which life makes in its out-coming, its manifestation.

    The Mystery of Space Robert T. Browne
  • extensity as an element in the complex of extension must be carefully distinguished from intensity.

British Dictionary definitions for extensity


(psychol) that part of sensory perception relating to the spatial aspect of objects
(rare) the condition of being extensive or extended
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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