What term describes a period of economic growth as measured by a rise in GDP?

The term that describes a period of economic growth as measured by a rise in GDP is "Expansion." During an expansion phase, the economy experiences increasing levels of employment, production, and sales, leading to overall prosperity. This growth is often evidenced by rising gross domestic product (GDP), which reflects the total value of goods and services produced in an economy.

In this context, expansion indicates a positive trajectory in economic activity, fostering confidence among consumers and businesses alike. As production ramps up to meet increasing demand, it often encourages further investment and spending, perpetuating the cycle of growth. This is crucial for understanding economic trends and policies aimed at fostering or sustaining economic health.