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.
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.