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Jyutping sai2 saam1 fan2
Pinyin xǐ shān fěn

Definitions (CC-CANTO)
  1. detergent
Definitions (Wiktionary)
  1. noun, Min-Nan
    washing powder; laundry detergent
    (syn.) 洗滌粉, 洗衣粉, 洗涤粉