鈍化 [钝－]

Jyutping deon6 faa3
Pinyin dùn huà

Definitions (Wiktionary)
  1. verb
    to passivise or be passivised
  2. verb, of a knife
    to become dull; to make (something) become dull
  3. verb, figuratively
    to weaken; to lessen; to become blunted or mild
  4. noun
    passivation
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）