E`qui*dis"tant (?), a. [L. aequidistans, -antis; aequus equal + distans distant: cf. F. équidistant.] Being at an equal distance from the same point or thing. -- E`qui*dis"tant*ly, adv. Sir T. Browne.

• occupying a position midway between two ends or sides
  
• occupying a position that is an equal distance between several points. Note that in a one-dimensional space this position can be identifed 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).