the large, flat Arctic regions of northern Europe, Asia and North America where no trees grow and where the soil below the surface of the ground is always frozen Topics Geographyc1冻原,苔原(树木不生,底土常年冰冻的北极地区) Word Originlate 16th cent.: from Lappish. Lappish is the language of the indigenous people of the extreme north of Scandinavia.