洗浄

1. Origins, structure, and basic meaning

• Structure: Written 洗浄 and read せんじょう, it is the removal of contamination from tools, components, or internal surfaces by washing or cleaning equipment.
• Basic usage: It is used for hot-water cleaning after use and a device that cleans inside narrow tubes.

2. Common pitfalls and similar expressions

• Technical cleaning rather than laundry
  • The word is common for instruments and industrial or medical equipment, not primarily for washing clothes.