A millionaire is an individual whose net worth is at least one million units of currency, typically measured in dollars. This wealth can come from various sources, including investments, real estate, business ownership, or inheritance. Millionaires often have access to financial resources that allow them to invest and grow their wealth further. The term "millionaire" has evolved over time, especially with inflation and changes in the economy. Today, some people may refer to those with a net worth of several million as "multi-millionaires." The lifestyle of millionaires can vary widely, with some choosing to live modestly while others indulge in luxury items and experiences.