# periodic

## English

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Wikipedia en

### Etymology 1

From French périodique, from Medieval Latin periodicus (cyclical), from Latin periodus (complete sentence, period, circuit), from Ancient Greek περίοδος (periodos, cycle, period of time).

#### Pronunciation

• (UK) IPA(key): /pɪ.ɹiˈɒdɪk/
•  Audio (US) Sorry, your browser either has JavaScript disabled or does not have any supported player. You can download the clip or download a player to play the clip in your browser. (file)
• Rhymes: -ɒdɪk
A graph of the sine function, a periodic function.

periodic (not comparable)

1. Relative to a period or periods.
2. Having repeated cycles.
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 $k$ time steps, for some $k>1$.
7. (rhetoric) Having a structure characterized by periodic sentences.
8. (chemistry) Relating to, derived from, or designating, the highest oxygen acid (HIO) of iodine.
##### Translations
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### Etymology 2

#### Pronunciation

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