Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Periodic.
  • adj. Published at regular intervals of more than one day.
  • adj. Of or relating to a publication issued at such intervals.
  • n. A publication issued at regular intervals of more than one day.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A publication issued regularly, but less frequently than daily
  • n. A publication that appears at fixed intervals
  • n. Often contains the most current information in the field, on every conceivable topic, often in greater detail than other publication formats.
  • n. The primary means for communication of original scholarship or creative work at the cutting edge of research in almost all fields.
  • adj. Periodic
  • adj. Published at regular intervals of more than one day, especially weekly, monthly, or quarterly
  • adj. Of, or relating to such a publication

from the GNU version of the Collaborative International Dictionary of English

  • n. A magazine or other publication which appears at stated or regular intervals.

from The Century Dictionary and Cyclopedia

  • Having a period; performed in a fixed period or cycle; appearing, occurring, or happening at stated intervals; regularly or statedly recurring at the end of a fixed period of time: as, periodical diseases; periodical publications.
  • Of or pertaining to magazines, newspapers, or other publications which appear or are published at regularly recurring intervals.
  • n. A publication issued at regular intervals in successive numbers or parts, each of which (properly) contains matter on a variety of topics, and no one of which is contemplated as forming a book by itself.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. happening or recurring at regular intervals
  • n. a publication that appears at fixed intervals

Etymologies

periodic +‎ -al. (Wiktionary)

Examples

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