icy, frozen
Latin word, found 25 times in the texts on Socratos.
Vergil, Aeneid 3.285: et glacialis hiemps aquilonibus asperat undas.
Ovid, Metamorphoses 2.173: quaeque polo posita est glaciali proxima serpens,
Seneca the Younger, Hercules Furens 129: signum celsi glaciale poli
All forms of glacialis