WordWeb Online

1. A publication that appears at fixed intervals

1. Happening or recurring at regular intervals
   "the periodical appearance of the seventeen-year locust";
   - periodic

Derived forms: periodicals

See also: annual, biannual, biennial, bimestrial, bimonthly, biweekly, biyearly, cyclic, daily, day-after-day, day-by-day, day-to-day, diurnal, fortnightly [Brit], half-hourly, half-yearly, hebdomadal, hebdomadary, hourly, midweekly, monthly, nightly, oscillating, oscillatory, semestral, semestrial, semiannual, semimonthly, semiweekly, triennial, weekly, yearly

Type of: publication

Encyclopedia: Periodical