the plane passing through the equator of the earth or another celestial body.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use equatorial plane in a sentence
Such worlds were a shock to astronomers, because planets form inside pancake-shaped disks of gas and dust orbiting in their stars’ equatorial planes.Most planets on tilted orbits pass over the poles of their suns | Ken Croswell | June 14, 2021 | Science News
In 2008, however, astronomers began finding worlds in other solar systems that sail far above and below their star’s equatorial plane.Most planets on tilted orbits pass over the poles of their suns | Ken Croswell | June 14, 2021 | Science News
An equatorial plane divides it into two parts, which have equal shares in bounding the segmentation cavity.The Works of Francis Maitland Balfour, Volume 1 | Francis Maitland Balfour
By these "two main axes" an equatorial plane is determined, which approximates them to the Discoidea.
The diameter of this equatorial plane is the "minor axis" of the ellipsoid.
Commonly all radial beams lie in the equatorial plane, sometimes also a part of them on both sides of it.
On the margin (in the equatorial plane) three strong pyramidal spines (at the end of the arms).