Median search is a computer science process that finds the middle number in a sequence of numbers. Think of it as finding the middle layer of a stack of pancakes. For example, if you had the numbers 8, 5, 9, 11, and 2, the median number would be 9, because it is the center number of the sequence. Median search can be useful for a variety of different tasks, like sorting, finding best and worst numbers, or even finding outliers.