Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “polar”

polar

adjective  /ˈpoʊ·lər/ us  

polar adjective (OF A PLACE)

[not gradable] of or near the area around the most northern or most southern points of the earth: the polar ice cap a polar expedition

polar adjective (OF ELECTRICITY)

relating to either of the two ends of a magnet or two parts of a battery (= device that produces electricity) which have opposite charges: fig. The play’s main characters are polar opposites (= They are completely opposite). chemistry Polar also describes a substance whose molecules have opposite positive and negative poles
(Definition of polar from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of polar?
Add Cambridge dictionaries to your browser to your website

More American English definitions for “polar”

Definitions of “polar” in other dictionaries

Word of the Day

dawn on sb

If a fact dawns on you, you understand it after a period of not understanding it.

Word of the Day

Highly delighted, bitterly disappointed, ridiculously cheap: adverbs for emphasis.

by Liz Walter,
October 22, 2014
We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More