PMBOK

Definition: PMBOK is an internationally recognized standard (IEEE, ANSI and ISO 21500) that deals with the application of knowledge, skills, tools, and techniques to meet project requirements.
The P Guide defines a project life cycle with 5 process groups, 10 knowledge areas and 47 processes of the project management profession.

More on pmbok. More on project management: PRINCE2, Project Management, RACI.