Definition: In the context of computer science, a "mediatrix" is a type of data structure that helps to unify and simplify multiple sets or lists of similar objects. It provides an efficient way to manipulate and access these data elements without having to traverse through each element individually. Mediatrizes are often used in software development when working with complex data structures such as arrays, linked lists, or hash tables. They allow for the creation of a single structure that represents all of the different types of objects contained