作動(さどう)

さどう
noun / suru verb
operation, activation (of machinery)
1. operation, activation, functioning
The operation or functioning of a machine, device, or mechanism. Refers to whether something is running or how it operates, rather than operating it manually.
エンジンが正常(せいじょう)に作動(さどう)している。
The engine is operating normally.
センサーが作動(さどう)してアラームが鳴(な)った。
The sensor activated and the alarm sounded.
低温(ていおん)環境(かんきょう)ではバッテリーが正(ただ)しく作動(さどう)しないことがある。
In low-temperature environments, the battery may not function properly.

A technical term used primarily for machines, devices, and mechanisms. The focus is on whether the device is functioning rather than on the act of operating it.

COMMON COLLOCATIONS:

  • 正常(せいじょう)に作動(さどう)する (operate normally)
  • 作動(さどう)確認(かくにん) (operation check)
  • 作動(さどう)温度(おんど) (operating temperature)
  • 作動(さどう)条件(じょうけん) (operating conditions)
  • 誤(ご)作動(さどう) (malfunction, false activation)

DISTINCTIONS:

  • 作動(さどう): operation/functioning of a machine (whether it works)
  • 操作(そうさ): operation/manipulation (the act of using or controlling)
  • 動作(どうさ): action, movement (of a person or machine)
  • 稼働(かどう): operation, running (of a factory or system — emphasizes being in service)

Related Words

Homophone: 茶道(さどう)
general
Added 2026.2.18 5:27
11500/11692_sadou