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Definition of "equatorial" []

  • Of, relating to, or resembling the earth's equator. (adjective)
  • Relating to conditions that exist at the earth's equator: equatorial heat. (adjective)
  • Having or constituting a support with two perpendicular axes, one of which is parallel to the earth's rotational axis. (adjective)
  • An equatorial telescope. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "equatorial" in a sentence
  • "German theologian, philosopher, organist, and mission doctor in equatorial Africa, who received the 1952 Nobel Prize for Peace for his efforts in behalf of “the Brotherhood of Nations.”"
  • "Because humans originated in equatorial areas with year-round sunshine, babies in the distant past wouldn't have needed to get vitamin D from breast milk, he says."
  • "It might surprise some readers to learn that a scientist pursuing an explanation of the Northern Lights spent years conducting research in equatorial"