The duchess and the duke came out to the door of the room to receive him, and with them a grave ecclesiastic, one of those who rule noblemen’s houses; one of those who, not being born magnates themselves, never know how to teach those who are how to behave as such; one of those who would have the greatness of great folk measured by their own narrowness of mind; one of those who, when they try to introduce economy into the household they rule, lead it into meanness.
There are no more uses of "magnate" in the book.
Show samples from other sources
She is an oil magnate.
I wondered what Rachel had told her father—a fabulously wealthy real estate magnate—to convince him she needed to borrow a helicopter.