IHRDC Logo

Discover the IHRDC Energy Glossarybeta

Search or select a letter above to browse the glossary.

Lag

In process control, the time between when a process variable begins to respond and when it has substantially re-stabilized (also called the time constant). The total delay caused by resistance, capacitance, and dead time. In geology, a deposit of coarse material left behind after finer materials have been removed by wind, water, or tidal action.