A magnate is a wealthy and powerful person in a particular industry or business. When you hear about a steel magnate or an oil magnate, you're hearing about someone who built or controls a huge company in that field and became extremely successful doing it.

The word comes from the Latin magnus, meaning “great,” and it captures both the person's wealth and their influence. A magnate has accumulated substantial wealth and also shapes entire industries through business decisions and control. Andrew Carnegie was a steel magnate whose companies produced much of America's steel in the late 1800s. Today's technology magnates run companies that millions of people use every day.

Think of the difference between owning a successful bakery in your town and owning a chain of bakeries across the country that influences what bread costs everywhere. That second person might be called a bakery magnate. The word suggests someone who has risen to the top of their field through ambition, business skill, and years of hard work, building something that changed how an entire industry works.