周しゅう期き

しゅ

う

き

Common wordJLPTN2Freq.FrequencyTop 10,000

Meanings

1

Refers to a regular, repeating interval of time or a complete round of a recurring phenomenon. Used in scientific, technical, and everyday contexts.

やく

29.5

日にち

です

。

The cycle of the moon's phases is about 29.5 days.

この機き械かいは点てん検けん周しゅう期きが短みじかい。

This machine has a short inspection period.

〈数かず〉の周しゅう期きでin cycles of (a given interval)
この現げん象しょうは約やく十じゅう一いち年ねんの周しゅう期きで起おこる。
This phenomenon occurs in cycles of about eleven years.
周しゅう期きを持もつto have a (regular) period/cycle
地ち球きゅうは約やく二に十じゅう四よ時じ間かんの周しゅう期きを持もつ。
The Earth has a cycle of about twenty-four hours.
周しゅう期きが乱みだれるfor a cycle/rhythm to become irregular
生せい活かつが不ふ規き則そくになって、月げっ経けいの周しゅう期きが乱みだれた。
Her lifestyle became irregular, and her menstrual cycle got thrown off.

期き間かんN3
期間 refers to any span of time, while 周期 specifically implies a regular, repeating interval.
サイクルN1
サイクル is a loanword often used for abstract or mechanical repeating processes, while 周期 is the standard term in scientific and natural contexts.

秋しゅう期き
秋期 (the autumn term/season) is pronounced identically to 周期 (a recurring cycle) but has a completely unrelated meaning.
周しゅう回かい
周期 means a recurring period or cycle in time, whereas 周回 refers to a physical loop or lap; the shared 周 kanji makes them easy to mix up.

Compound of 周 (cycle, circumference) and 期 (period, time). The meaning is transparent from its components.

周しゅう期き表ひょう

periodic table

short cycle; short period

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