Normal moveout adjustment is a common term used in the field of geophysics and seismic exploration. It refers to a technique used to correct the time shift of wave reflections in subsurface layers caused by the varying velocities of the materials. Essentially, the adjustment is undertaken to align the reflected waveforms to the subsurface sources. If you are looking for some synonyms for normal moveout adjustment, here are a few: time shifting correction, seismic migration, NMO correction, wavelet transformation, and seismic velocity analysis. These terms are all related to the same concept and are used interchangeably in the industry.