periodic Hear it!

periodic definition

pe·ri·odic (pir′ē äd′ik)

adjective

  1. occurring, appearing, or recurring at regular intervals a periodic fever
  2. occurring from time to time; intermittent
  3. of or characterized by periods the periodic motion of a planet
  4. of, characterized by, or expressed in periodic sentences

Etymology: MFr periodique < L periodicus < Gr periodikos

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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