extensity

(ek stensə tē, ik-)

noun

  1. the quality of having extension
  2. Psychol. that quality of sensation which permits the perception of space or size

See extensity in American Heritage Dictionary 4

noun pl. ex·ten·si·ties
  1. a. The quality of having extension or being extensive.
    b. A specific degree or range of extension.
  2. The attribute of sensation that enables one to perceive space or size.

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