periodical

plural periodicals

1. A publication issued regularly, but less frequently than daily.

   Synonyms: serial

2. A regularly issued thematic publication that contains the most current information in its field, often the primary means for communication of original scholarship or creative work at the cutting edge of research in its field.

comparative more periodical · superlative most periodical

1. Periodic.

   The periodical times of all the satellites.

   1838, Thomas Dick, Celestial Scenery

   1 more example

   Last spring, the periodical cicadas emerged across eastern North America. Their vast numbers and short above-ground life spans inspired awe and irritation in humans—and made for good meals for birds and small mammals.

   2012 March-April, Anna Lena Phillips, “Sneaky Silk Moths”, in American Scientist, volume 100, number 2, archived from the original on 19 Feb 2013, page 172

   Synonyms: cyclic, cyclic, cyclical, periodic, regular

2. Published at regular intervals of more than one day, especially weekly, monthly, or quarterly.

   influence opinion through the periodical press.

   1882, William John Courthope, “Addison”, in Men of Letters

3. Of, or relating to such a publication.