Detrend

In forecasting models, the process of removing the effects of accumulating data sets from a trend to show only the absolute changes in values and to allow potential cyclical patterns to be identified. This is done using regression and other statistical techniques.

Investopedia Says:
Different charting services include the use of a detrend price oscillator, which gives traders a method for analyzing shorter-term cyclical patterns. These patterns can then be used to more effectively identify major turning points in the longer-term cycle.

Related Links:
The economy has a large impact on the market. Learn how to interpret the most important reports. Economic Indicators To Know