What is the slowdown in the rate of increase of prices of goods & services in National GDP over time called?

In the rate ofinflation, disinflation is a decrease –in a nation'sgross domestic productover time, a slowdown in the rate of increase of the generalprice levelof goods and services. It is the opposite ofreflation. When the increase in the “consumer price level” it occurs disinflation and slows down from the previous period when the prices were rising.