iodize /ī′ədīz/ [Gk, ioeides + izein, to cause] , to treat or impregnate with iodine or an iodide. Table salt is iodized to prevent the occurrence of goiter in areas with insufficient iodine in the drinking water or food. Iodized oil, a viscous liquid with the odor of garlic, has been used as a contrast medium in radiology.