equatorial
Americanadjective
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of, relating to, or near an equator, especially the equator of the earth.
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of, like, or typical of the regions at the earth's equator.
equatorial temperatures.
noun
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a telescope mounting having two axes of motion, one parallel to the earth's axis and one at right angles to it.
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Also called equatorial instrument. Also called equatorial telescope. a telescope with such a mounting.
adjective
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of, like, or existing at or near the equator
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astronautics (of a telescope) mounted on the perpendicular axes, one of which is parallel to the earth's axis
an equatorial orbit
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astronomy of or referring to the celestial equator
equatorial coordinates
noun
Other Word Forms
Etymology
Origin of equatorial
Vocabulary lists containing equatorial
South America - Middle School
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South America - Introductory
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South America - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“The warm pool of water in the western equatorial Pacific Ocean is expanding farther to the east,” L’Heureux said.
From Los Angeles Times ● Jul. 9, 2026
Kelvin waves typically begin when wind patterns over the far western equatorial Pacific briefly reverse direction.
From Science Daily ● Jun. 15, 2026
The job is also "physically demanding", especially given the equatorial climate they are in.
From BBC ● Jun. 1, 2026
El Nino is a natural climate phenomenon that warms surface temperatures in the central and eastern equatorial Pacific Ocean, bringing worldwide changes in winds, pressure and rainfall patterns.
From Barron's ● May 28, 2026
I found out later that I travelled a narrow road, the Pacific equatorial counter-current.
From "Life of Pi" by Yann Martel
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
