fluoridating is fluoridate's Present Participle

fluoridate

US [ˈflʊərɪˌdeɪt]
UK [ˈflɔːrɪdeɪt]
  • v.向(饮水等)中加氟化物(以防儿童蛀齿)
  • Web在饮水中加少量氟；添加氟素
Simple Present：fluoridates  Present Participle：fluoridating  Past Tense：fluoridated  

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Web Definition

v.
1.
向(饮水等)中加氟化物(以防儿童蛀齿)