1. Of or existing at or near a geographical pole or within the Arctic or Antarctic Circles
   "polar regions"
    
2. Located at, near or coming from the earth's poles
   "a polar air mass"; "Antarctica is the only polar continent"; "polar diameter"; "polar zone"
    
3. Extremely cold
   "polar weather";
   - arctic, frigid, gelid, glacial, icy
    
4. Characterized by opposite extremes; completely opposed
   "polar points of view"; "extreme and indefensible polar positions";
   - diametric, diametrical, opposite
    
5. Having a pair of equal and opposite charges
   "The polar molecule had a positive end and a negative end"
    
6. Being of crucial importance
   "the polar events of this study"; "a polar principal";
   - pivotal
    
7. (mathematics) relating to coordinates using radius and angle
   "The equation is expressed in polar form"

See also: Antarctic, Arctic, charged, circumpolar, cold, crucial, different, important, north-polar, south-polar

Antonym: equatorial

Encyclopedia: Polar, WI