adjective
- occurring or existing before a glacial period or ice age
Usage: geology; technical
Examples
- Preglacial deposits were buried beneath layers of glacial till.
- The preglacial landscape was dramatically reshaped by advancing ice sheets.
- Geologists studied preglacial rock formations to understand the region's history.
- Preglacial river valleys were deepened and widened by glacial erosion.
- The preglacial climate was warmer than during the ice age that followed.