What is the meaning of Glacial?

Of, or relating to glaciers.

Very slow.

Cold and icy.

Having the appearance of ice.

Cool and unfriendly.

A glacial period (colloquially known as an ice age).

glacial

glacial

freezing, ice-cold, very cold

icy, very cold

frozen, at the temperature of ice

glacial, pertaining to glaciers

frigid, chilly, not cordial

icy

glacial

glacial (cold and icy)

glacial (relating to glaciers)

ice age

glacial; cold (emotionally distant)

glacial

glacial

frigid, chilly, not cordial

Source: wiktionary.org