Real Economic Growth Rate

What Does Real Economic Growth Rate Mean?
A measure of economic growth from one period to another expressed as a percentage and  adjusted for inflation (i.e. expressed in real as opposed to nominal terms). The real economic growth rate is a measure of the rate of change that a nation's gross domestic product (GDP) experiences from one year to another. Gross national product (GNP) can also be used if a nation's economy is heavily dependent on foreign earnings.

Investopedia explains Real Economic Growth Rate
The real economic growth rate builds onto the economic growth rate by taking into account the effect that inflation has on the economy. The real economic growth rate is a "constant dollar" and is therefore a more accurate look at the rate of economic growth because it is not distorted by the effects of extreme inflation or deflation.