Collineation

In projective geometry, a collineation is a one-to-one and onto map (a bijection) from one projective space to another, or from a projective space to itself, such that the images of collinear points are themselves collinear. A collineation is thus an isomorphism between projective spaces, or an automorphism from a projective space to itself. Some ...
Found on http://en.wikipedia.org/wiki/Collineation

Collineation

• (n.) The act of aiming at, or directing in a line with, a fixed object.
Found on http://thinkexist.com/dictionary/meaning/collineation/

Collineation

Col·lin`e·a'tion noun [ Latin collineare to direct in a straight line. See Collimation .] The act of aiming at, or directing in a line with, a fixed object. [ R.] Johnson.
Found on http://www.encyclo.co.uk/webster/C/110
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