triangulation

noun7

1. •
   A technique in which distances and directions are estimated from an accurately measured baseline and the principles of trigonometry; (countable) an instance of the use of this technique.
2. •
   A process by which an unknown location is found using three known distances from known locations.

   • A special advantage of radar is that it works during darkness and other periods of low visibility, which prevent visual triangulation and aircraft techniques for measuring nuclear clouds. — 1958
3. •
   The practice of repositioning one's group or oneself on the political spectrum in an attempt to capture the centre.

   • Triangulation was a presidential leadership strategy that presented the president as having borrowed elements of both the right and the left to develop some form of center policy amalgam. — 2004
4. •
   The use of three (or more) researchers to interview the same people or to evaluate the same evidence to reduce the impact of individual bias.
5. •
   A subdivision of a planar object into triangles, and by extension the subdivision of a higher-dimension geometric object into simplices.
6. •
   The network of triangles so obtained, that are the basis of a chart or map.
7. •
   A delaying move in which the king moves in a triangular path to force the advance of a pawn.