periodic

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periodic¹

  • /ˌpɪɹiˈɒdɪk/ UK
  • /ˌpɪə-/ UK
  • /ˌpɪɹiˈɑdɪk/ US

Rhymes with -ɒdɪk

Where it comes from

From French périodique, from Medieval Latin periodicus (“cyclical”), from Latin periodus (“complete sentence, period, circuit”), from Ancient Greek περίοδος (períodos, “cycle, period of time”). By surface analysis, period + -ic.

adjective

  1. not comparable Relative to a period or periods.
  2. not comparable Having repeated cycles. 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 […].”

    Similar: cyclic

  3. not comparable Occurring at regular intervals. That last problem did intrude on Hazzard’s roamings, and when she refers to the living city it is with periodic references to thefts of cars and wallets, with a warning not to carry anything “snatchable” by the thieves on motorcycles who whiz through the streets.

    Similar: cyclic

  4. not comparable Periodical.
  5. not comparable Pertaining to the revolution of a celestial object in its orbit.

    Opposite: non-periodic

  6. not comparable, of a state For which any return to it must occur in multiples of k time steps, for some k>1.

    Opposite: aperiodic

  7. not comparable, rhetoric Having a structure characterized by periodic sentences.

Similar: cyclic, cyclical, periodic, periodical, regular · Opposite: acyclical, irregular, noncyclic, noncyclical, unperiodic

periodic²

  • /ˌpɜːɹaɪˈɒdɪk/

adjective

  1. not comparable Relating to the highest oxidation state of iodine; of or derived from a periodic acid.

Similar: cyclic, cyclical, periodic, periodical, regular · Opposite: acyclical, irregular, noncyclic, noncyclical, unperiodic

Thesaurus

Closest in meaning: intermittent, cyclic, sporadic, oscillating, oscillatory, periodical, pulsed, rhythmical, rhythmic, cyclical, period, periodically, interim, daily, regularly, recurring

Translations

Every language

adj relative to a period or periods

日本語周期的 shūki-teki
Portuguêsperiódico
Françaispériodique
Italianoperiodico
Ελληνικάπεριοδικός periodikós

adj having repeated cycles

Españolperiódico
日本語周期的 shūki-teki
中文週期的 /周期的 zhōuqí de
Portuguêsperiódico
Françaispériodique
Deutschperiodisch
Italianoperiodico, periodica
Ελληνικάπεριοδικός periodikós
Русскийпериоди́ческий periodíčeskij
עבריתמחזורי machzorí

adj occurring at regular intervals

日本語周期的 shūki-teki
Portuguêsperiódico
Françaispériodique
Ελληνικάπεριοδικός periodikós

adj periodical

日本語周期的 shūki-teki
Ελληνικάπεριοδικό periodikó

adj (astronomy) pertaining to the revolution of a celestial object in its orbit

日本語周期的 shūki-teki

adj (mathematics) of a state

עבריתמחזורי machzorí

Talk about this word

Cite this
MLA

"periodic." Wiktionary, via Micwyn, micwyn.com/word/periodic. Accessed 6 Nov. 2026.

APA

periodic. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/periodic

Chicago

"periodic." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/periodic.

BibTeX
@misc{periodic_2026,
  title = {periodic},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/periodic},
  urldate = {2026-11-06}
}