HormuzPronunciation: /ˈhɔːmʊz, hɔːˈmuːz/ (also Ormuz)Definition of Hormuz an Iranian island at the mouth of the Persian Gulf, in the Strait of Hormuz. It is the site of an ancient city, which was an important centre of commerce in the Middle Ages. Hormuz in other Oxford dictionaries Definition of Hormuz in the US English dictionary