👉 Iodized refers to a process or method of removing an element from a substance in order to make it more pure. It is often used for treating water, which can contain heavy metals like lead and mercury. The goal is to remove these heavy metals so that they do not affect the health of those who drink it. Iodization involves adding iodine (iodide) to a solution or mixture in order to make it more stable and less likely to react with other substances.