Normal moveout stretch is a common term used in the oil and gas industry to describe the stretching of seismic data during processing. This stretch is used to correct for the variations in travel time that occur when sound waves reflect off of subsurface rock formations. Synonyms for normal moveout stretch include normal moveout correction, NMO stretch, stretch mute, and normal moveout time correction. These terms all describe the same process of adjusting seismic data to account for the different velocities of sound waves traveling through the subsurface rock layers. Understanding these synonyms is important for anyone working in the seismic data processing field.