Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Polar \Po"lar\, a. [Cf. F. polaire. See Pole of the earth.]
Of or pertaining to one of the poles of the earth, or of a sphere; situated near, or proceeding from, one of the poles; as, polar regions; polar seas; polar winds.
Of or pertaining to the magnetic pole, or to the point to which the magnetic needle is directed.
(Geom.) Pertaining to, reckoned from, or having a common radiating point; as, polar co["o]rdinates.
Polar axis, that axis of an astronomical instrument, as an equatorial, which is parallel to the earths axis.
Polar bear (Zo["o]l.), a large bear ( Ursus maritimus syn. Thalarctos maritimus) inhabiting the arctic regions. It sometimes measures nearly nine feet in length and weighs 1,600 pounds. It is partially amphibious, very powerful, and the most carnivorous of all the bears. The fur is white, tinged with yellow. Called also White bear. See Bear.
Polar body, Polar cell, or Polar globule (Biol.), a minute cell which separates by karyokinesis from the ovum during its maturation. In the maturation of ordinary ova two polar bodies are formed, but in parthogenetic ova only one. The first polar body formed is usually larger than the second one, and often divides into two after its separation from the ovum. Each of the polar bodies removes maternal chromatin from the ovum to make room for the chromatin of the fertilizing spermatozo["o]n; but their functions are not fully understood.
Polar circles (Astron. & Geog.), two circles, each at a distance from a pole of the earth equal to the obliquity of the ecliptic, or about 23[deg] 28', the northern called the arctic circle, and the southern the antarctic circle.
Polar clock, a tube, containing a polarizing apparatus, turning on an axis parallel to that of the earth, and indicating the hour of the day on an hour circle, by being turned toward the plane of maximum polarization of the light of the sky, which is always 90[deg] from the sun.
Polar co["o]rdinates. See under 3d Co["o]rdinate.
Polar dial, a dial whose plane is parallel to a great circle passing through the poles of the earth.
Polar distance, the angular distance of any point on a sphere from one of its poles, particularly of a heavenly body from the north pole of the heavens.
Polar equation of a line or Polar equation of a surface, an equation which expresses the relation between the polar co["o]rdinates of every point of the line or surface.
Polar forces (Physics), forces that are developed and act in pairs, with opposite tendencies or properties in the two elements, as magnetism, electricity, etc.
Polar hare (Zo["o]l.), a large hare of Arctic America ( Lepus arcticus), which turns pure white in winter. It is probably a variety of the common European hare ( Lepus timidus).
Polar lights, the aurora borealis or australis.
Polar opposition, or Polaric opposition or Polar contrast or Polaric contrast (Logic), an opposition or contrast made by the existence of two opposite conceptions which are the extremes in a species, as white and black in colors; hence, as great an opposition or contrast as possible.
Polar projection. See under Projection.
Polar spherical triangle (Spherics), a spherical triangle whose three angular points are poles of the sides of a given triangle. See 4th Pole, 2.
Polar whale (Zo["o]l.), the right whale, or bowhead. See Whale.
n. (context zoology English) A very large bear found in the Arctic Circle, white in appearance and very furry.
n. white bear of arctic regions [syn: ice bear, Ursus Maritimus, Thalarctos maritimus]
A polar bear is a giant bear species.
Polar Bear may also refer to:
Polarbear was a Los Angeles-based band led by former Jane's Addiction bassist, Eric Avery, who formed the band with Biff Sanders, formerly of Ethyl Meatplow, as a side project. They recorded most of their music in downtown Los Angeles, at Motiv studios. Many Jane's Addiction fans consider Why Something Instead of Nothing? to be the best post- Jane's Addiction work done by any of the four original members. It was re-released in 2004.
Polar Bear is the debut release from Polar Bear, led by Jane's Addiction bassist Eric Avery. This clear blue 12" vinyl, MR-054, was self-produced and released on Man's Ruin Records, limited to 2,000 copies. It includes instrumental versions of songs the band would later release on their records, reworked with vocal tracks. Intended for spinning and mixing by DJs, these versions have more of a club edge to them.
The polar bear (Ursus maritimus) is a carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is a large bear, approximately the same size as the omnivorous Kodiak bear (Ursus arctos middendorffi). A boar (adult male) weighs around , while a sow (adult female) is about half that size. Although it is the sister species of the brown bear, it has evolved to occupy a narrower ecological niche, with many body characteristics adapted for cold temperatures, for moving across snow, ice, and open water, and for hunting seals, which make up most of its diet. Although most polar bears are born on land, they spend most of their time on the sea ice. Their scientific name means " maritime bear", and derives from this fact. Polar bears hunt their preferred food of seals from the edge of sea ice, often living off fat reserves when no sea ice is present. Because of their dependence on the sea ice, polar bears are classified as marine mammals.
Because of expected habitat loss caused by climate change, the polar bear is classified as a vulnerable species, and at least three of the nineteen polar bear subpopulations are currently in decline. For decades, large-scale hunting raised international concern for the future of the species, but populations rebounded after controls and quotas began to take effect. For thousands of years, the polar bear has been a key figure in the material, spiritual, and cultural life of circumpolar peoples, and polar bears remain important in their cultures.
Polar Bear is a British experimental jazz band led by drummer Seb Rochford with Pete Wareham and Mark Lockheart on tenor saxophone, Tom Herbert on double bass and Leafcutter John on electronics and occasionally guitar or mandolin.
Polar Bear were nominated for the 'Best band' award at the BBC Jazz Award 2004, while Rochford was nominated for the 'Rising Star' award. Their first album Dim Lit was released in the same year and was a small scale success.
Their second record, Held On The Tips Of Fingers merged elements of cool jazz, funk, dance music, free jazz, electronica and drum and bass and was, by comparison, a massive crossover hit, earning Polar Bear a nomination for the Mercury Music Prize in 2005. The success was all the more unusual for an almost purely instrumental album. The album was nominated for a BBC Jazz Award 2006. It was selected as one of "The 100 Jazz Albums That Shook The World" by Jazzwise magazine. and featured in The Guardian's list of "1000 Albums To Hear Before You Die". They have been involved with F-IRE Collective.
They released their self-titled third album, Polar Bear, in July 2008 with Tin Angel Records.
In 2010, the band released Peepers and mini-album Common Ground, a collaboration with Portuguese-born, London-based rapper Jyager, on The Leaf Label. Their 2014 album In Each And Every One was shortlisted for the Mercury Music Prize and in the same year they released the single "Cuckoo" in collaboration with singer and songwriter Jin Jin. In March 2015 Polar Bear released their sixth album Same as You, including the single "Don't Let The Feeling Go". This track features frequent collaborator Shabaka Hutchings ( Sons of Kemet and The Comet Is Coming) on tenor saxophone and Rochford and Hannah Darling on vocals.
In 2015, Polar Bear were nominated for Best Jazz Act in the MOBO Awards and Urban Music Awards.
Polar Bear is a Bagnall steam locomotive built in 1905 for the Groudle Glen Railway, to supplement the similar but slightly smaller Sea Lion. The two Bagnalls were temporarily taken out of service in the 1920s when they were replaced by a pair of battery locomotives. These proved unsatisfactory, and Polar Bear and Sea Lion were returned to traffic. The railway was closed for the duration of World War II, and when the line reopened in the late 1940s only Polar Bear was returned to traffic. Following the 1962 closure of the GGR, Polar Bear was sold to the Brockham Museum Trust in 1967. In 1982 it passed, with the rest of the Brockham collection, to the Amberley Museum Railway, where it was returned to traffic in the early 1980s. Polar Bear's boiler was condemned around 1988, returning to service with a new boiler in 1993. Its boiler certificate expired at the end of 2010; with a retube and work on the firebox being required before a return to service. Since being based at Amberley, Polar Bear has returned to the Groudle Glen on three occasions (1993, 1996 and 2005) to visit.
Polar Bear was stripped down for overhaul in early 2011. The boiler was moved to Chatham for overhaul, with mechanical work being undertaken in-house at Amberley. The boiler was returned to Amberley in January 2012. Polar Bear was relaunched on 13 July 2013 by BBC newsreader and railway enthusiast Nicholas Owen, and is now in service sharing steam passenger duties at Amberley with the museum's 1917 Bagnall 0-4-0ST Peter.
Polar Bear is set to make its fourth visit home to the Groudle Glen Railway since it was preserved in late July 2016.
Polar Bear was a gauge battery-electric locomotive built by Wingrove & Rogers in 1921 as works no. 314 for the Groudle Glen Railway on the Isle of Man. Together with its sister, Sea Lion, they were intended to replace two Bagnall steam locos of the same names. The locos were not a success and, despite Polar Bear being rebuilt with bogies and a battery truck, the steam locos were reboilered and returned to traffic. Polar Bear was eventually scrapped acround 1926.
Polar Bear is the eponymous third album by Sebastian Rochford's British jazz band Polar Bear.
Usage examples of "polar bear".
He let me precede him through the door, then made for the counter while the other sailor, a red-complexioned character about the size and shape of a polar bear, nudged me gently into an angled bench seat in one corner of the room.
Nothing more than that could be told about her form, since she was muffled in the garb of the arctic - moccasins reaching above her knees, and with the tops decorated with the long hair of the polar bear, trousers of the skin of the arctic hare, a shirt-like garment of auk skins, and an outer parka of a coat fitted with a hood.
Otto would probably have said the same thing if he'd been watching Smithy being mangled by a polar bear: because of both nature and build Otto was not a man to become unnecessarily involved in anything even remotely physical.
If you should run into a polar bear, Cox will wrestle it to death.
You boys manage to snag a polar bear, I want to warn you for your own good, be real polite to the one you take or his kinfolk will take exception.
When I'd first seen him in Scotland, he had reminded me of a polar bear, and now out here on the ice cap, huge and crouched in his ice-whitened furs, he resembled one even more.
There's a polar bear eyeing me lustfully even as we speak and I was saving myself for you.