In various contexts within computing, a 'child' refers to an entity that is subordinate to another, known as the 'parent'. In programming, a child can be an element in a data structure, such as a tree, where child nodes branch off from a parent node. In process management, a child process is spawned by a parent process. The relationship typically implies that the child is derived from or dependent on the parent, inheriting properties or methods. Understanding parent-child relationships is fundamental in areas like data structures, object-oriented programming, and operating systems.