equidistant

alternative archaic æquidistant

1. not comparableOccupying a position midway between two ends or sides.
2. not comparableOccupying a position that is an equal distance between several points. In a one-dimensional space this position can be identified with two points, in a two-dimensional space with three points (not on the same straight line), and in a three-dimensional space with four points (not in the same plane).
3. not comparablecartographyDescribing a map projection that preserves scale. No map can show scale correctly throughout the entire map but some can show true scale between one or two points and every point or along every meridian and these are referred to as equidistant.

plural equidistants · alternative archaic æquidistant

1. geometryAny of a set of points or figures that are equidistant.

   Every straight line terminated by a pair of conjugate equidistants to a given straight line is bisected by the given straight line, and makes equal alternate angles with the equidistants, &c.

   1880, Proceedings of the Royal Society of Edinburgh (volume 10, page 649)