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Definition of Periodic
1. Adjective. Happening or recurring at regular intervals. "The periodic appearance of the seventeen-year locust"
Exact synonyms: Periodical
Similar to: Cyclic, Oscillating, Oscillatory, Diurnal, Daily, Day-after-day, Day-by-day, Day-to-day, Nightly, Hebdomadal, Hebdomadary, Weekly, Biweekly, Semiweekly, Hourly, Half-hourly, Biweekly, Fortnightly, Annual, Yearly, Biannual, Biyearly, Half-yearly, Semiannual, Biennial, Biyearly, Triennial, Monthly, Bimestrial, Bimonthly, Bimonthly, Semimonthly, Semestral, Semestrial, Midweekly
Antonyms: Aperiodic
Derivative terms: Periodicity, Period, Periodical
Similar to: Cyclic, Oscillating, Oscillatory, Diurnal, Daily, Day-after-day, Day-by-day, Day-to-day, Nightly, Hebdomadal, Hebdomadary, Weekly, Biweekly, Semiweekly, Hourly, Half-hourly, Biweekly, Fortnightly, Annual, Yearly, Biannual, Biyearly, Half-yearly, Semiannual, Biennial, Biyearly, Triennial, Monthly, Bimestrial, Bimonthly, Bimonthly, Semimonthly, Semestral, Semestrial, Midweekly
Antonyms: Aperiodic
Derivative terms: Periodicity, Period, Periodical
2. Adjective. Recurring or reappearing from time to time. "Periodic feelings of anxiety"
Definition of Periodic
1. a. Pertaining to, derived from, or designating, the highest oxygen acid (HIO&?;) of iodine.
2. a. Of or pertaining to a period or periods, or to division by periods.
Definition of Periodic
1. recurring at regular intervals [adj]
Medical Definition of Periodic
1. Recurring at regular intervals of time. Origin: Gr. Periodikos This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)