Project Management Glossary


# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are 14 terms in this directory beginning with the letter L.
Late finish date
The latest possible date a scheduled activity can be completed without delaying the rest of the project.

Late start date
The latest possible date a scheduled activity can be started without delaying the rest of the project.

Lateral thinking
Lateral thinking involves using a roundabout method to inspire new ideas or solutions. It can be done in a variety of ways, from using a random word to choosing an object in a room as a basis for thought.

Lead/Lead time
The amount of time an activity can be brought forward with respect to the activity it is dependent upon.

Lean manufacturing
A production methodology based on the idea of streamlining and doing more with less, such as by providing customers with the same product value while eliminating waste and thus reducing production costs.

Lean six sigma
Lean six sigma combines the no-waste ideals of lean manufacturing with the no-defects target of six sigma. The goal of Lean six sigma is to eliminate waste and defects so that projects cost less and deliver more consistent quality.

Lessons learned
The sum of knowledge gained from project work, which can be used as references and points of interest for future projects.

Level of effort
Work that is not directly associated with components of a work breakdown structure but that can instead be thought of as support work. Examples of level of effort include maintenance and accounting. It is one of three types of activities used to measure work performance as part of earned value management.

Life cycle
The entire process used to build its deliverables. Life cycles are divided into a number of phases. A variety of life cycle models are in use in project management.

Line of balance
A graphical technique used to illustrate relationships between repetitive tasks in projects such as building identical housing units. Each set of repetitive tasks is illustrated as a single line on a chart. Project managers look for places where dependent tasks intersect, indicating that the successor task must be delayed.

Linear scheduling method
A graphical scheduling technique used to assign resources when project work consists of repetitive tasks. It focuses on maximizing resource use and reducing time wastage due to interruptions.

Linear sequential model
A linear sequential model moves through a project life cycle’s phases systematically and sequentially. It is typically used for small projects with straightforward requirements, since sequential development makes it difficult to revise design based on testing or preliminary feedback. (See also waterfall model)

Logic network
A chronologically arranged diagram that shows relationships between project activities.

Logical relationship
A dependency between project activities or between project activities and milestones.