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

Third, Alcantara is just 2.3 degrees south of the equator, a near-perfect placement for slinging satellites into equatorial or polar orbits. Joe Pappalardo, Popular Mechanics, "Can the U.S. Save Alcantara, Brazil’s Cursed Spaceport?," 20 Mar. 2019 Afterward, the sun will seem to cross the equator, and favor us in the northern hemisphere for six months. Martin Weil, Washington Post, "Winter may block view of sun at moment of spring equinox," 20 Mar. 2018 Sixty-two additional barrels were sent out on a container ship that stopped in 40 ports around the world, visiting five different continents and crossing the equator four times. Sam Dangremond, Town & Country, "How Jefferson's Ocean Bourbon Was Aged at Sea," 4 Apr. 2014 To assemble: To assemble, cut cake in half through equator. Woman's Day Kitchen, Woman's Day, "Double White Chocolate Cake," 29 Nov. 2018 The distribution of charge is much more symmetrical around the equator. Chris Lee, Ars Technica, "Physicists report electron is round—what does that mean?," 7 Nov. 2018 The researchers found sublimation to be the dominant factor on equatorial Europa, the regions within 23 degrees of the moon's equator. Mike Wall, Space.com, "Jupiter Moon Europa's Jagged Ice Towers Could Imperil Robot Landers," 8 Oct. 2018 Since then, theories have envisioned a cable tethered to the Earth—probably somewhere near the equator—that would allow for electromagnetic vehicles to ride up and down at a much cheaper cost than rockets. Megan Barber, Curbed, "Japan is trying to build an elevator to space," 12 Sep. 2018 And as the difference in temperatures between the Arctic and the equator diminishes, so could the pressure gradient that drives large scale air currents like the jet stream. Rachel Becker, The Verge, "Hurricanes stalling like Florence over the Carolinas may get even more common," 15 Sep. 2018

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

17 May 2019

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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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