English

Alternative forms

• periodick (obsolete)

Pronunciation

• (UK) IPA^(key): /pɪ.ɹiˈɒdɪk/
• Rhymes: -ɒdɪk

A graph of the sine function, a periodic function.

Adjective

periodic ‎(not comparable)

1. Relative to a period or periods.
2. Having repeated cycles.
   • 1899, Stephen Crane, chapter 1, in Twelve O'Clock:

     There was some laughter, and Roddle was left free to expand his ideas on the periodic visits of cowboys to the town. “Mason Rickets, he had ten big punkins a-sittin' in front of his store, an' them fellers from the Upside-down-F ranch shot 'em up […].”

3. Occurring at regular intervals.
4. Periodical.
5. (astronomy) Pertaining to the revolution of a celestial object in its orbit.
6. (mathematics, stochastic processes, of a state) For which any return to it must occur in multiples of time steps, for some .
7. (rhetoric) Having a structure characterized by periodic sentences.
8. (chemistry) Relating to, derived from, or designating, the highest oxygen acid (HIO) of iodine.

Synonyms

• (repeated): cyclic

Antonyms

• (astronomy): non-periodic
• (mathematics): aperiodic

Derived terms

Related terms

• period
• periodicity

Translations

Etymology 2

per- +‎ iodic

Pronunciation

• enPR: "pûrīŏd'ĭk, IPA^(key): /ˌpɜːraɪˈɒdɪk/

Adjective

periodic ‎(not comparable)

1. Of or derived from a periodic acid.

Derived terms

• metaperiodic
• orthoperiodic
• periodate
• periodic acid

Ladin

Adjective

periodic m pl

1. plural of periodich