An isometric process is a thermodynamic process in which the volume of a system remains constant. During this process, any heat added to the system results in a change in pressure and temperature, but not in volume. This is often observed in gases contained within rigid containers, where the walls do not allow for expansion or contraction. In an isometric process, the work done by the system is zero because there is no change in volume. This concept is important in various fields, including thermodynamics and engineering, as it helps in understanding how energy is transferred and transformed in systems under constant volume conditions.