In the conventional sense, when we say someone is “wealthy”, it implies this person has lot’s of money in his/her bank account. But wealth, in its essence, expresses something much deeper about reality: the well-being. It begins with essential basic material needs that every human being has a right to access: food, clean water, health, clothing, shelter, education… Humans also need wealth at the immaterial level: love, care, free time, art, beauty, acknowledgment, self-development…
Another way to put it: wealth is whatever brings us closer to what is true, good, and beautiful.