周しゅう回かい

しゅ

う

か

い

Freq.FrequencyTop 10,000

周回する · noun or participle which takes 'suru'

Meanings

going around; orbiting; circling

Refers to the action of moving around something, such as a track, orbit, or circuit. Often used in contexts like racing, satellites, or patrols.

Refers to the distance around something or the area surrounding it. Less common than sense 1; often replaced by 周囲 (しゅうい) in modern Japanese.

〈場ば所しょ〉を周しゅう回かいするto go around (a track, course, area, etc.)
選せん手しゅたちはトラックを何なん度ども周しゅう回かいした。
The athletes went around the track many times.
〈物もの〉を周しゅう回かいするto orbit or circle around something (e.g. a planet, satellite)
その衛えい星せいは地ち球きゅうを周しゅう回かいしている。
The satellite orbits the Earth.

一いっ周しゅうN1sense 1
一周 stresses completing exactly one full lap or circuit, while 周回 refers more generally to the act of going around, often repeatedly.
周しゅう囲いN3sense 2
周囲 is the everyday word for 'surroundings' or 'circumference', while 周回 in this sense is more formal and less commonly used today.
巡じゅん回かいN1sense 1
巡回 is used for patrolling or making rounds (e.g. a guard or doctor), whereas 周回 is more neutral and often technical, as in racing or orbits.
旋せん回かい sense 1
旋回 emphasizes turning or banking (as of an aircraft or vehicle), while 周回 emphasizes completing a loop around a course or body.

周しゅう期きN2sense 1
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 (しゅう, 'circumference') and 回 (かい, 'round'). The reading is on'yomi, and the word is a straightforward Sino-Japanese formation.