ionizers

/ˈaɪəˌnaɪzərz/
noun
  1. Plural of ionizer; devices that produce negative ions to clean the air.
    • Many modern air purifiers are actually ionizers that remove particles from the air.
    • The store sells several different ionizers for home and office use.
    • Some ionizers produce ozone as a byproduct, which can be harmful in large amounts.