polar
1. po.lar \'po--l*r\ aj [NL polaris, fr. L polus pole] 1a: of or relating
to a geographical pole or the region around it 1b: coming from or having
the characteristics of such a region 2: of or relating to one or more
poles (as of a magnet) 3: serving as a guide 4: diametrically opposite
5: having a pair of equal and opposite charges {~ compound} 6: resembling
a pole or axis around which all else revolves : PIVOTAL
2. polar n : a straight line related to a point; specif : the straight line
j oining the points of contact of the tangents from a point exterior to a
conic section