Kwiatkowski-Phillips-Schmidt-Shin test

Etymology
Named for the four people who proposed it, Denis Kwiatkowski,, and  in the 1992 paper "| Testing the null hypothesis of stationarity against the alternative of a unit root".

Noun

 * 1)  A test used for testing a null hypothesis that an observable time series is stationary around a deterministic trend (i.e. trend-stationary) against the alternative of a unit root.