| 单词 | polar |
| 释义 | polar (once / 728 pages) 1adj 2adj 3adj The idea of polar suggests equal opposites. For example, the North and South Poles are at opposite ends of the planet, and both are equally glacial, or very cold, which, by the way, is another meaning of polar. The English word polar derives from the Latin polus and the Greek polos, which means "axis." (See the connection with the North and South Poles?) The discovery of polar bears was first recorded in the mid- 18th century, while the idea of "polar opposites" came about in 1832. The adjective polar is also used to describe something vitally important, an idea that came from the importance of Polaris, the North Star, which has always been a voyager’s guide. WORD FAMILYpolar: bipolar, circumpolar, nonpolar, polarise, polarity, polarize, polarly, transpolar+/depolarise: depolarised, depolarising/depolarization: depolarizations/depolarize: depolarization, depolarized, depolarizes, depolarizing/polarisation: depolarisation/polarise: depolarise, polarisation, polarised, polarises, polarising/polarity: polarities/polarization: polarizations/polarize: depolarize, polarization, polarized, polarizes, polarizing/pole: polar, poled, poles, poling USAGE EXAMPLESThe annual Polar Bear Plunge raises money for charity. Washington Times(Jan 01, 2017) The “Polar Bear Days” promotion begins Sunday and ends Feb. 28. Washington Times(Jan 01, 2017) The Lobster Dip at Old Orchard Beach is the biggest of Maine’s polar plunges. Washington Times(Jan 01, 2017) 1 1adj of or existing at or near a geographical pole or within the Arctic or Antarctic Circles polar regions Syn|Ant circumpolar located or found throughout a polar region Arctic, north-polarof or relating to the Arctic Antarctic, south-polarat or near the south pole equatorial of or existing at or near the geographic equator pantropic, pantropicaldistributed throughout the tropics tropic, tropicalrelating to or situated in or characteristic of the tropics (the region on either side of the equator) 2adj located at or near or coming from the earth's poles polar diameter polar zone a polar air mass Antarctica is the only polar continent 3adj extremely cold 2polar weather Syn arctic, frigid, gelid, glacial, icy cold having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration 1adj characterized by opposite extremes; completely opposed extreme and indefensible polar positions Syn diametric, diametrical, opposite different unlike in nature or quality or form or degree 2adj having a pair of equal and opposite charges 3Syn charged of a particle or body or system; having a net amount of positive or negative electric charge adj being of crucial importance the polar events of this study a polar principal Syn pivotal crucial, important of extreme importance; vital to the resolution of a crisis |
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