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Synonyms

equatorial

American  
[ee-kwuh-tawr-ee-uhl, ek-wuh-] / ˌi kwəˈtɔr i əl, ˌɛk wə- /

adjective

  1. of, relating to, or near an equator, especially the equator of the earth.

  2. of, like, or typical of the regions at the earth's equator.

    equatorial temperatures.


noun

  1. a telescope mounting having two axes of motion, one parallel to the earth's axis and one at right angles to it.

  2. Also called equatorial instrument.  Also called equatorial telescope.  a telescope with such a mounting.

equatorial British  
/ ˌɛkwəˈtɔːrɪəl /

adjective

  1. of, like, or existing at or near the equator

  2. astronautics (of a telescope) mounted on the perpendicular axes, one of which is parallel to the earth's axis

    an equatorial orbit

  3. astronomy of or referring to the celestial equator

    equatorial coordinates

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an equatorial mounting for a telescope

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of equatorial

First recorded in 1655–65; equator + -ial

Vocabulary lists containing equatorial

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.

In cases where Washington is legally barred from sending people home directly, it has sent deportees to countries like Equatorial Guinea.

From Barron's • Jun. 5, 2026

Neither the Equatorial Guinean government, nor the US State Department, immediately responded to a request for comment.

From Barron's • Jun. 5, 2026

Scientists finally got a break in 2021 and 2022 when storm activity in Jupiter's North Equatorial Belt temporarily decreased.

From Science Daily • May 21, 2026

In addition to its five founders it includes Algeria, Equatorial Guinea, Gabon, Libya, Nigeria and the Republic of the Congo.

From BBC • Apr. 29, 2026

There is never a dull moment here at the Equatorial, though.

From "The Poisonwood Bible" by Barbara Kingsolver

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