Metformin (Glucophage, Glumetza, others). Generally, metformin is the first medication prescribed for type 2 diabetes. It works by improving the sensitivity of your body tissues to insulin so that your body uses insulin more effectively. Metformin also lowers glucose production in the liver. Metformin may not lower blood sugar enough on its own.
Arctic definition. Region in the northernmost area of the Earth, centered on the North Pole. Note: The weather of the Arctic is characterized by long, cold winters and short, cool summers. Note: The Arctic has been the object of much exploration by air, land, and sea. The shortest distance by plane between continents in the Northern Hemisphere is often over the Arctic.
Freebase(0.00 / 0 votes)Rate this definition: Arctic Circle. The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. In 2012, it is the parallel of latitude that runs 66Â° 33â² 44â³ north of the Equator. The region north of this circle is known as the Arctic, and the zone just to the south is called the Northern Temperate Zone.