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 ?
The polar bear patrol was set up by Kaare Winther Hansen, WWF's Greenland co-ordinator.
Kaare said: "Polar bears have always come into Arctic settlements, but the problem is escalating."
Despite the decrease, the analyst maintained that 10 percent wasn't a significant loss especially since the baseline for NASA's observation showed an unusually large size for the polar ice caps.
"'Let's get too close to a polar bear in its natural environment and then kill it if it gets too close,' Morons," British actor-comedian Ricky Gervais tweeted.
You first need to aim the mount's polar axis to within at least a few degrees of the celestial pole to be sure Polaris is in the PoleMaster's field.
'It's something different...You can see other animals, but polar bears are (rare)...
While on land, polar bears in Hudson Bay consume terrestrial vegetation (Derocher et al., 1993), but past stable isotope analyses have indicated that these foods do not contribute significantly to the energy budget of polar bears (Ramsay and Hobson, 1991; Hobson and Stirling, 1997; Hobson et al., 2009).
They also posited that polar bears could lower their metabolic rate to save energy if they were not catching enough seals.
This intimate portrayal of the polar bear will inspire and enthrall readers of all ages.
In order to illustrate the relationships between polar vortex and ozone depletion, the linear regression, correlation, and composite difference analysis methods are adopted in this study with detrend data.
How can polar bears survive in such a cold, icy environment?
The term polar vortex has become part of the everyday vocabulary after the widespread media coverage of the extreme cold events over the United States during the early winter of 2014.