Glossary

PMP Glossary of Key Terms

By The Exam Atlas Editorial Team · Verified 2026-05-29

Plain-English definitions of the terms that recur in PMP study. Simplified for learning; PMI’s materials are authoritative.

TermDefinition
Predictive (waterfall)Planning the project in detail up front.
AgileDelivering iteratively in short cycles with frequent feedback.
HybridCombining predictive and agile approaches.
Servant leadershipLeading by supporting and removing blockers for the team.
StakeholderAnyone affected by or able to affect the project.
ScopeThe work required to deliver the product.
Scope creepUncontrolled growth of scope.
WBSWork Breakdown Structure — hierarchical decomposition of work.
Critical pathThe longest sequence of dependent tasks; sets minimum duration.
Earned Value (EV)The budgeted value of work actually completed.
Planned Value (PV)The budgeted value of work planned.
Actual Cost (AC)The real cost of work completed.
RiskAn uncertain event that could affect objectives.
Risk registerA log of identified risks and responses.
Sprint / iterationA short, fixed cycle of agile delivery.
Product backlogA prioritised list of work in agile.
TailoringAdapting the approach to the project’s needs.
Change controlA process for evaluating and approving changes.
ProcurementAcquiring goods or services from outside the team.
Lessons learnedKnowledge gained, captured for future projects.
Business valueThe worth a project delivers to the organisation.

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