polar


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Related to polar: Polar coordinates, Polar bonds

polar

1. situated at or near, coming from, or relating to either of the earth's poles or the area inside the Arctic or Antarctic Circles
2. having or relating to a pole or poles
3. Chem
a. (of a molecule or compound) being or having a molecule in which there is an uneven distribution of electrons and thus a permanent dipole moment
b. (of a crystal or substance) being or having a crystal that is bound by ionic bonds

polar

(poh -ler) (polar system) See magnetic cataclysmic variables.

polar

[′pō·lər]
(astronomy)
A member of a class of cataclysmic variable stars whose light displays strong circular polarization. Also known as AM Herculis star.
(mathematics)
For a conic section, the polar of a point is the line that passes through the points of contact of the two tangents drawn to the conic from the point.
For a quadric surface, the polar of a point is the plane that passes through the curve which is the locus of the points of contact of the tangents drawn to the surface from the point.
For a quadric surface, the polar of a line is the line of intersection of the planes which are tangent to the surface at its points of intersection with the original line.

polar

i. An air mass with characteristics developed over high latitudes, especially within subpolar highs. Continental and maritime are two types of polar air masses. See polar air mass.
ii. The parameters plotted on polar coordinates. See polar coordinates.
References in periodicals archive ?
Coca-Cola retail store opportunities Until December 31, consumers also will have the opportunity to support WWF's polar bear conservation efforts at all four North America Coca-Cola retail stores.
It is likely that there are many more intersections of CloudSat and polar lows in the Arctic.
Despite having worked in the Arctic for many years, including with polar bears, I found myself highly engaged and entertained by the text, particularly the personal observations and anecdotes from the field.
Despite being separate species, this relatively recent split raises the possibility that brown and polar bears could breed as polar bears -- a phenomenon that has been documented both in zoos and, in very rare cases, the wild.
Polar has been first a Worcester brand, then a New England brand, then a Northeast brand, and now the snow birds down south are very familiar with Polar," he said.
A solid link between global warming and polar bear mortality emerged in 2004 when researchers were surprised to find four drowned bears in the Beaufort Sea off Alaska's North Slope.
The greatest fans of the polar bear are people between the ages 18 and 23.
Polar bears are man's only natural predators - they would attack a human if they saw one - and would not need to be provoked.
Perfectly at home in one of the world's most forbidding environments, polar bears spend their summers roaming the Arctic on large chunks of floating ice.
Interior Secretary Dirk Kempthorne says that although his decision to seek protection for polar bears acknowledged the melting of the Arctic ice, his department was not taking a position on why the ice was melting or what to do about it.
Time magazine has compared Bush and the polar bear to Nixon's Cambodia and JFK's Bay of Pigs.
Polar bears are massive predators: A male bear can grow to be a hefty 770 kilograms (1,700 pounds).