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

microbrewery

a small company that makes beer, usually using traditional methods, and often has a restaurant where its beer is served

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More