The Collaborative International Dictionary
Equatorially \E`qua*to"ri*al*ly\, adv. So as to have motion or direction parallel to the equator.
Wiktionary
adv. In an equatorial direction
Usage examples of "equatorially".
It took him a moment of careful consideration to decide whether it would annoy Quinn more to see the sash positioned across his rounding belly, equatorially, or under the bulge like a sling.
Dofine swung to the viewports in time to see hyphens of pulsed, red light streak from the freighter's equatorially mounted batteries.
The Earth was forty-three kilometers stouter when measured equatorially than when measured from top to bottom around the poles.
The sphere was encircled equatorially by a variety of remote handling and sensory devices, and prominently displayed on the forward upper surface was the insignia of a Diagnostician.