from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act of collineating; collimation

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of aiming at, or directing in a line with, a fixed object.

from The Century Dictionary and Cyclopedia

  • n. The act or result of placing anything in a line with another thing or other things.


Latin collineare to direct in a straight line. See collimation. (Wiktionary)


  • In the new setting, the projective properties of figures can be defined unexceptionably. a one-one mapping f of projective space onto itself is a collineation if it sends any three collinear points A, B, and C, to three points (A), (B), and (C), which are collinear too.

    Nineteenth Century Geometry

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