Pessimistic Duration

Pessimistic Duration is an estimate of the longest activity duration that takes into account all of the known variables that could affect performance. See also most likely duration, and optimistic duration.

Definition

According to the PMI Lexicon of Project Management Terms,

Pessimistic Duration. An estimate of the longest activity duration that takes into account all of the known variables that could affect performance. See also most likely duration, and optimistic duration.