Definition of pack ice in English:

pack ice

Syllabification: pack ice

noun

  • An expanse of large pieces of floating ice driven together into a nearly continuous mass, as occurs in polar seas.
    More example sentences
    • By contrast with pack ice, ice floes in the Chukchi Sea flaw zone move independently.
    • In two years, observed densities on pack ice were much greater than those on fast ice; in the other two years, the densities on pack ice and fast ice were similar.
    • There are two kinds of sea ice in Antarctica: fast ice and pack ice.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space