IPA: /ˌæntiˈoʊzənənt/
KK: /æntiˈoʊzənənt/
A chemical substance that helps to stop or slow down the damage caused by ozone in materials.
The manufacturer added an antiozonant to the rubber to extend its lifespan.
Antiozonant is formed from "anti-" (meaning against) and "ozon" (from Greek "ozon", meaning to smell or to have a smell, referring to ozone) and the suffix "-ant" (indicating an agent or something that performs an action). The word describes a substance that acts against ozone or counteracts its effects.
Think of 'anti-' meaning against and 'ozon' relating to the smell of ozone — an antiozonant is something that works against the effects of ozone.