equator

noun
equa·​tor | \ i-ˈkwā-tər How to pronounce equator (audio) , ˈē-ˌkwā-\

Definition of equator

1 : the great circle of the celestial sphere whose plane is perpendicular to the axis of the earth
2 : a great circle of the earth or a celestial body that is everywhere equally distant from the two poles and divides the surface into the northern and southern hemispheres
3a : a circle or circular band dividing the surface of a body into two usually equal and symmetrical parts
b : equatorial plane the equator of a dividing cell

Examples of equator in a Sentence

Recent Examples on the Web

The temperature contrast between the Arctic and the equator is a main driver of wind. Bob Berwyn, sun-sentinel.com, "Why are hurricanes like Dorian stalling, and is global warming involved?," 3 Sep. 2019 The turbulence research focuses on the main driver of mid-latitude jet streams: The temperature difference between the equator and the North Pole, which powers what is known as the thermal wind. Andrew Freedman, Anchorage Daily News, "Buckle up: Climate change is already contributing to bumpier North Atlantic flights, study finds," 7 Aug. 2019 The shape of the Northern Hemisphere jet stream is at least partly controlled by the difference in temperature between the equator and the Arctic. Alejandra Borunda, National Geographic, "A heat wave is turning Greenland’s ice to slush. That's bad news.," 1 Aug. 2019 When set up and propelled by other weather patterns, water vapor from near the equator flows in wide ribbons hundreds of miles long above our heads. Anchorage Daily News, "Atmospheric rivers are sometimes good, sometimes bad for Alaska," 31 Aug. 2019 Indonesia’s islands hang off the equator like shirts on a clothesline, so the weather is ideal for riding. Francisco Martinez, Los Angeles Times, "Life gave you lemons? How a motorbike trip in Indonesia became lemonade," 30 Aug. 2019 North is up; Pluto's equator roughly bisects the band of dark red terrains running across the lower third of the map. Lauren Kent, CNN, "Why Pluto is no longer a planet (or is it?)," 24 Aug. 2019 Cut them in half ‘round the mater-equator and squeeze gently to splorsh out the seeds. James P. Dewan, chicagotribune.com, "What to do with summer’s bounty of tomatoes, zucchini and more? Make ratatouille," 13 Aug. 2019 They are found all over the world in some of the most extreme environments, from icy mountains and polar regions to the balmy equator and the depths of the sea. Cnn, The Mercury News, "Are tardigrades alive on the moon after spacecraft’s crash landing?," 7 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'equator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of equator

14th century, in the meaning defined at sense 1

History and Etymology for equator

Middle English, from Medieval Latin aequator, literally, equalizer, from Latin aequare

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Statistics for equator

Last Updated

20 Sep 2019

Look-up Popularity

Time Traveler for equator

The first known use of equator was in the 14th century

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More Definitions for equator

equator

noun
equa·​tor | \ i-ˈkwā-tər How to pronounce equator (audio) \

Kids Definition of equator

: an imaginary circle around the earth everywhere equally distant from the north pole and the south pole

equator

noun
equa·​tor | \ i-ˈkwāt-ər How to pronounce equator (audio) , ˈē-ˌ How to pronounce equator (audio) \

Medical Definition of equator

1 : a circle or circular band dividing the surface of a body into two usually equal and symmetrical parts especially at the place of greatest width the equator of the lens of the eye

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More from Merriam-Webster on equator

Rhyming Dictionary: Words that rhyme with equator

Spanish Central: Translation of equator

Nglish: Translation of equator for Spanish Speakers

Britannica English: Translation of equator for Arabic Speakers

Britannica.com: Encyclopedia article about equator

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