Synonyms for the term "arctic rodent" include a variety of small, furry creatures that live in cold climates. Some common synonyms for this term include the lemming, which is a small rodent that lives in the tundra regions of the Arctic, as well as the Arctic ground squirrel, which hibernates for up to eight months of the year. Other possible synonyms for the term "arctic rodent" might include the muskox, which is a large, shaggy mammal that inhabits the northern parts of North America, or the Arctic hare, which has a thick white coat that blends in with the snow and ice. Ultimately, the term "arctic rodent" can refer to a variety of different animals that live in the colder regions of the world.