IONIZER

[UK and ANZ] usually -iser [noun] [C]An ionizer is an electrical device which puts negatively charged ions into the air in a room, and this is believed to be good for health. -ion (ACTION), -ation, -ition [suffix] - added to verbs to form nouns showing action or conditionIn 'obsession' a noun has been formed from the verb 'obsess' by adding -ion.In 'admiration' a noun has been formed from the verb 'admire' by removing the 'e' and adding -ation.In 'repetition' a noun has been formed from the verb 'repeat' by changing the spelling and adding -ition.