Definitions for "Call graph"
(IEEE) A diagram that identifies the modules in a system or computer program and shows which modules call one another. Note: The result is not necessarily the same as that shown in a structure chart. Syn: call tree, tier chart. Contrast with structure chart. See: control flow diagram, data flow diagram, data structure diagram, state diagram.
a degenerate case of a sequence graph with a window of two
an interprocedural program representation where nodes represent individual procedures and edges represent call sites