pu ‧ ri ‧ fi ‧ er /ˈpjʊərəfaɪə, ˈpjʊərɪfaɪə $ ˈpjʊrəfaɪər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ purification , ↑ purist , ↑ purity ≠ ↑ impurity , ↑ purifier ; verb : ↑ purify ; adverb : ↑ purely ; adjective : ↑ pure ≠ ↑ impure ]
something used to remove dirty or harmful substances
air/water purifier