Yield Curve: A graph of treasury yields or interest rates across maturities, ranging from the shortest to longest-term debt. The slope of the yield curve is used to measure the direction of the economy and identify potential opportunities for investment. It can be plotted with different types of securities (e.g., bonds, notes, bills) to illustrate changing trends in the financial markets. Investors who understand the yield curve are more likely to make profitable decisions and achieve long-term financial stability.