Final answer:
In data flow diagrams, a process symbolizes the transformation of incoming data flows into outgoing data flows, typically represented by shapes like circles or ovals.
Step-by-step explanation:
A symbol used in data flow diagrams (DFDs) to depict an entity or process within which incoming data flows are transformed into outgoing data flows is known as a process. In DFDs, a process is typically represented by a circle, oval, or a rounded rectangle.
This symbol indicates where data inputs are taken in, processed, and then output as the result of the transformation process. These diagrams play a critical role in the analysis and design of systems, allowing for the easy depiction and understanding of data flow and the transformations that occur within different processes of an information system.