i ‧ on ‧ i ‧ zer BrE AmE ( also ioniser British English ) /ˈaɪənaɪzə $ -ər/ noun [countable]
a machine used to make the air in a room more healthy by producing negative ↑ ion s
i ‧ on ‧ i ‧ zer BrE AmE ( also ioniser British English ) /ˈaɪənaɪzə $ -ər/ noun [countable]
a machine used to make the air in a room more healthy by producing negative ↑ ion s
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012