- (a.) Of or pertaining to a period or periods or to division by periods.
- (a.) Happening, by revolution, at a stated time; returning regularly, after a certain period of time; acting, happening or appearing, at fixed intervals; recurring; as, periodical epidemics.
- (n.) A magazine or other publication which appears at stated or regular intervals.
- (a.) Performed in a period or regular revolution; proceeding in a series of successive circuits; as, the periodical motion of the planets round the sun.
- (a.) Of or pertaining to a period; constituting a complete sentence.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Periodical. Retrieved September 25, 2026, from http://smartdefine.org/periodical/definitions/2043863 |
| Chicago | Webster's. 2011. "Periodical" http://smartdefine.org/periodical/definitions/2043863 (accessed September 25, 2026). |
| Harvard | Webster's 2011, Periodical, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/periodical/definitions/2043863>. |
| MLA | Webster's. "Periodical" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/periodical/definitions/2043863> |