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

Guam's airport has large runways, a favorable climate, and a latitude only about 14 degrees north of the equator. Eric Berger, Ars Technica, "Rocket Report: Rokot ending, more spaceports, back-to-back Falcon Heavies," 21 Dec. 2018 Italy, too, worked with the United States: Italian researchers partnered with NASA to acquire Scout rockets and launch them from a former oil platform off the coast of Kenya, near the equator. Eric Berger, Ars Technica, "As the SpaceX steamroller surges, European rocket industry vows to resist," 20 July 2018 InSight landed at Elysium Planitia, near the equator in the northern hemisphere. Paul Roberts, The Seattle Times, "Mars landing is a nail-biter for Redmond rocket engineers," 26 Nov. 2018 Forecast models North Atlantic hurricanes are born just above the equator as a low-pressure center. Scott K. Johnson, Ars Technica, "What pushed 2017’s Atlantic hurricane season into overdrive?," 28 Sep. 2018 Instead, the researchers favor the idea that the star is ejecting a fast-moving wind from its poles and slower-moving material along its equator. John Timmer, Ars Technica, "Scientists spot two massive stars creating a pinwheel of dust," 20 Nov. 2018 The spacecraft carries four telescopes that together will survey a strip of sky extending from the solar system's pole to its equator, known as the ecliptic. Daniel Clery, Science | AAAS, "Updated: NASA’s new satellite brings the search for Earthlike exoplanets closer to home," 19 Apr. 2018 That means the sun’s total gamma-ray emission is most intense along its equator at solar minimum and at its poles during maximum. Shannon Hall, Scientific American, "The Sun Is Spitting Out Strange Patterns of Gamma Rays—and No One Knows Why," 28 Mar. 2018 First contact InSight will land near the equator, in the western Elysium Planitia, about 600km north from where the Curiosity rover is presently located. Eric Berger, Ars Technica, "Here’s how NASA will attempt to land on the Red Planet Monday," 26 Nov. 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

8 Feb 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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