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[peer-ee-uh-dis-i-tee] /ˌpɪər i əˈdɪs ɪ ti/
the character of being periodic; the tendency to recur at regular intervals.
Origin of periodicity
1825-35; < French périodicité. See periodic1, -ity Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for periodicity
  • These variations appear to have a periodicity of several hundred years, with several temperature peaks and dips.
  • Beyond the obvious periodicity of the pulse, an uninitiated viewer sees nothing but irregular noise.
Word Origin and History for periodicity

1805, from French périodicité (1796), from périodique, from Latin periodicus (see periodic).

Online Etymology Dictionary, © 2010 Douglas Harper
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periodicity in Medicine

periodicity pe·ri·o·dic·i·ty (pĭr'ē-ə-dĭs'ĭ-tē)

  1. The quality or state of being periodic; recurrence at regular intervals.

  2. The tendency of chemical elements to have similar properties when arranged according to their atomic number.

  3. The position of an element in the periodic table.

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