Paraglacial means unstable conditions[1] caused by a significant relaxation time in processes and geomorphic patterns following glacial climates.
When a large mass of ice melts, the newly exposed landscape is free of vegetation and is generally unstable.
The combination of a lack of vegetation, high discharge, and a changing climate (the cause of deglaciation) forces ecological communities, sediment deposition patterns and surface morphology to adjust to the new conditions over time.
Periglacial processes—those that directly involve ice—may be prominent in the early stages of paraglacial landscape response, but the two terms are not synonymous.
Many geomorphic processes that don't require freezing conditions—for example fluvial erosion, transport and deposition—are typically involved in paraglacial change.