In the context of QuickSort, a greater element refers to an element that is larger than the pivot element chosen during the partitioning step. During the partitioning process, elements greater than the pivot are moved to the right of the pivot, while elements smaller than or equal to the pivot are moved to the left. This way, at the end of each partitioning step, all elements to the left of the pivot are smaller or equal, and all elements to the right of the pivot are greater.