Glossary of Terms

This glossary contains definitions used by the Project Change Frame® and other methodologies supported by Lindsay McKenna Limited.

A number of definitions are taken from the Project Management Book of Knowledge (PMBOK®) from the Project Managment Institute. These are denoted by having (PMI) at the end of the definition..

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Lag
A modification of a logical relationship that directs a delay in the successor task. for example, in a FS relationship with a 10 day lag, the successor can start not start until 10 days after the completion of the predecessor. (PMI)
Late Finish Date (LF)
In the critical path method, the latest possible date that an activity may be completed without delaying a specified milestone (usually the project finish date). (PMI)
Late Start Date (LS)
In the critical path method, the latest possible date that an activity may begin without delaying a specified milestone (usually the project finish date). (PMI)
Lead
A modification of a logical relationship which allows an acceleration of the successor task. (PMI)
Lessons Learned
The learning gained from the process of performing the project. Lessons learned may be identified at any point. Also considered a project record. (PMI)
LF
See Late Finish Date.
LS
See Late Start Date.
Life Cycle Costing
The concept of including acquisition, operating and disposal costs when evaluating various alternatives. Also known as the total cost of ownership. (PMI)
Linear Responsibility Chart
The same as an accountability matrix or responsibility assignment matrix. (PMI)
Line Manager
  1. The manager of any group that actually makes a product or performs a service. (PMI)
  2. A Functional manager. (PMI)

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