Definition of circumpolar in US English:



  • 1Situated around or inhabiting one of the earth's poles.

    ‘the eight circumpolar countries met in 1991’
    • ‘These landforms occur throughout the circumpolar boreal zone.’
    • ‘The deeps of the Pacific, the Atlantic, and Indian Oceans all join the circumpolar deeps of the southern oceans.’
    • ‘It seems that there have been circumpolar nomads present at least since the last glaciation period, which ended around 10,000 BC.’
    • ‘Daily mean temperature and total daily precipitation records were obtained from climatic stations for the circumpolar Arctic for the decades 1976-85 and 1986-95.’
    • ‘One study found that since 1978, the ice cover in the circumpolar Arctic has fallen by about 3 percent per decade; another estimate puts it at 14 percent per decade.’
    • ‘About 100,000 inhabit northern circumpolar waters in at least 29 separate stocks, with the largest concentration in Canada's Hudson Bay.’
    • ‘Our Way of Life is comprised of seven different exhibits that form a wide-ranging presentation on the circumpolar world, with an emphasis on the Canadian Arctic and Alaska.’
    • ‘Polar bears have successfully occupied virtually all available sea ice habitats throughout the circumpolar Arctic and the global population was last estimated at 21,500-25,000 individuals.’
    • ‘The temperature and precipitation clusters defined in this study provide a useful baseline for future examination of climate change in the circumpolar Arctic.’
    • ‘But it is equally applicable to rural and remote areas in much of the world, and in sparsely populated regions such as the Arctic circumpolar area.’
    • ‘The opening of this gateway eventually led to the relative thermal isolation of Antarctica and the creation of the clockwise strong Antarctic circumpolar current.’
    • ‘Nothing like this vast, circumpolar ecosystem occurs in the Southern Hemisphere.’
    • ‘Lying within the circumpolar region, between the ocean and spectacular mountain ranges, its long dark winters are offset by plentiful hours of summer daylight.’
    • ‘Even small changes in the oceanographic conditions in the Southern Ocean, the circumpolar sea around Antarctica, could affect southern right whale population dynamics.’
    • ‘It sets out objectives and priorities for Canada's foreign policy in the circumpolar world, including the northern territories of Canada, Russia, the U.S., the Nordic countries, and the waters that surround them.’
    • ‘Antarctica became isolated from the other continents in the Miocene, leading to the formation of a circumpolar ocean circulation.’
    • ‘The Arctic Council was set up in 1996 to help circumpolar states cooperate on common issues, especially environmental issues.’
    • ‘This is because of the position of Antarctica, isolated from surrounding land masses with a circumpolar ocean current that cuts it off from warmer water.’
    • ‘Arctic char have a circumpolar distribution and more commonly occur in northern waters.’
    • ‘Even at sites far removed from circumpolar ice masses, isostatic changes in local relative sea level resulting from the additional weight of ocean water left a subtle imprint on coastal landscapes.’
    bitterly cold, cold, chill, chilling, frosty, frozen, glacial, wintry, sub-zero
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    1. 1.1Astronomy (of a star or motion) above the horizon at all times in a given latitude.
      ‘the Big Dipper is circumpolar at Mediterranean latitudes’
      • ‘In other higher latitudes, it would become circumpolar, never setting - the land of the midnight moon, one could say.’
      • ‘Since the compass had not yet been invented, there are two ways this could have been accomplished: by celestial sightings, using a circumpolar star, or by sighting on the sun.’
      • ‘One idiosyncrasy of this method was that because these two stars were circumpolar (they never set), they could be seen from Egypt year - round.’
      • ‘If one notices, the shuttle takes a circumpolar route as it orbits.’