Imagine the Earth as a perfect hollow sphere. Call the place where you are on its surface, point A. There is only one place where a line segment that equals the sphere's diameter, or the Earth's diameter in this case, could be located on the opposite side. What's is the name of that opposite point furthest from me? ans:Antipode
I am looking for a word which specifies "nearly at the ellipsoid opposite side of the earth", by which I mean, given a beam that is perpendicular to earth surface at a given first location, and the second location that this beam crosses earth on the other end, what is a word that specifies a place that is near the second location?