English Explanatory Dictionary

periodic

English dictionary entry

Meanings

adj
  1. Relative to a period or periods.
  2. Having repeated cycles.
  3. Occurring at regular intervals.
  4. Periodical.
  5. Pertaining to the revolution of a celestial object in its orbit.
  6. For which any return to it must occur in multiples of k time steps, for some k>1.
  7. Having a structure characterized by periodic sentences.
adj
  1. Relating to the highest oxidation state of iodine; of or derived from a periodic acid.

Pronunciation

/ˌpɪɹiˈɒdɪk/ /ˌpɪə-/ /ˌpɪɹiˈɑdɪk/ en-us-periodic.ogg "pûrīŏd'ĭk /ˌpɜːɹaɪˈɒdɪk/ LL-Q1860 (eng)-Vealhurl-periodic (science).wav

Word forms

periodic

Etymology

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.

Synonyms

cyclic cyclical periodic periodical regular

Antonyms

acyclical irregular noncyclic noncyclical unperiodic non-periodic aperiodic

Related words

period periodicity catamenial

Derived words

antiperiodic aperiodic biperiodic diperiodic equiperiodic extraperiodic isoperiodic monoperiodic multiperiodic nonperiodic omniperiodic periodically periodic classification periodic comet periodic continued fraction periodic function periodic inequality periodic inventory periodicize periodic law periodic month periodic structure periodic system periodic table photoperiodic preperiodic pseudoperiodic quasi-periodic quasiperiodic semiperiodic subperiodic superperiodic thermoperiodic uniperiodic unperiodic metaperiodic orthoperiodic periodate periodic acid
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