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gallop gal·lop (gāl'əp)
A triple cadence to the heart sounds at rates of 100 beats per minute or more due to an abnormal third or fourth heart sound being heard in addition to the first and second sounds. Also called cantering rhythm, gallop rhythm.
accelerated canter in which the rider's weight is brought sharply forward as the horse reaches speeds up to 30 miles (50 km) an hour.