pa·leo·crys·tic \| ̷ ̷ ̷ ̷ ̷ ̷|kristik\adjective Etymology:pale- + Greek krystallos + English -ic : being, relating to, or characterized by ice that has had prolonged existence < paleocrystic sea > < paleocrystic ice is several years old; some of it may be dozens of years old — Vilhjalmur Stefansson >