equatorial plane

noun Astronomy.

the plane passing through the equator of the earth or another celestial body.

Origin of equatorial plane

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for equatorial plane

equatorial plane
[ ē′kwə-tôrē-əl, ĕk′wə- ]


The plane that contains all of the centromeres and their spindle attachments during metaphase of mitosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.