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Situated, like the earth's equator, equidistant from either end.


/equa·to·ri·al/ (e″kwah-tor´e-al)
1. pertaining to an equator.
2. occurring at the same distance from each extremity of an axis.


[L. aequator]
A line encircling a round body and equidistant from both poles. equatorial, adjective

equator of cell

The boundary of a plane through which the division of a cell occurs.

equator of crystalline lens

The line that marks the junction of the anterior and posterior surfaces of the crystalline lens. The fibers of the suspensory ligament are attached to it.

equator oculi

An imaginary line encircling the eyeball midway between the anterior and posterior poles.


the circle which divides the spherical object into two equal halves.

equatorial region
the middle piece; said of spindle muscle fibers.
References in periodicals archive ?
The positions of the first division equatorial region as well as the newly formed second division equatorial regions are marked by strong background fluorescence especially in the nuclear channel (Fig.
Only once has rain been detected falling and evaporating in the equatorial regions, and only during the recent expected rainy season.
The Ellipso satellite-based voice and data communications system will employ 17 state-of-the-art low-earth orbit (LEO) satellites in two sub- constellations -- Borealis(TM) that covers the northern hemisphere and Concordia(TM) that covers the equatorial region and the southern hemisphere.
The surface of Vesta is complex and varied, with preserved ejecta blankets clinging to some craters, large troughs extending around the equatorial region, enormous mountains, and unevenly distributed enigmatic dark material, but as yet an absence of volcanic features.
In terms of latitude, the dunes on Titan are confined to its equatorial region, in a band between 30 degree S and 30 degree N.
In an equatorial region extending to 30 [degrees] latitude, the wind moves at about 350 kilometers per second.
The changing circulation pattern produced clouds in Titan's equatorial region.
The two polar caps then twist in opposite directions to undo the loops, and the equatorial region collapses and pushes through itself.
For almost six months the rover has been precariously perched on the edge of a shallow crater in an equatorial region of Mars.
For over 6 months, the atmosphere was so dirty in the equatorial region that you could almost not take pictures of the Earth from space unless you used infrared photography," he says.
Scientists announced last week that NASA's sharp-eyed Mars Reconnaissance Orbiter (MRO) found ice in five freshly made impact craters, several very close to Viking 2's landing site in an equatorial region known as Utopia Planitia.
During these times, the shadows of the planet's rings fall in the equatorial region on the planet, and the shadows of Saturn's moons external to the rings, especially those whose orbits are inclined with respect to the equator, begin to intersect the planet's rings.