A multidimensional array is a data structure that allows you to store data in more than one dimension, typically in the form of rows and columns. For example, a two-dimensional array can be visualized as a table, where each element is accessed using two indices: one for the row and one for the column. This structure is useful for organizing complex data, such as matrices or grids. In programming, multidimensional arrays are commonly used in languages like C, Java, and Python. They enable efficient storage and manipulation of data, making it easier to perform operations like searching, sorting, and mathematical calculations on structured datasets.