Definition for PRO-JEC'TION

PRO-JEC'TION, n. [L. projectio.]

  1. The act of throwing or shooting forward. – Brown.
  2. A jutting out; extension beyond something else.
  3. The act of scheming; plan; scheme; design of something to be executed.
  4. Plan; delineation; the representation of something; as, the projection of the sphere, is a representation of the circles on the surface of the sphere. There are three principal points of projection; the stereographic, in which the eye is supposed to be placed on the surface of the sphere; the orthographic, in which the eye is supposed to be at an infinite distance; and the gnomonic, in which the eye is placed in the center of the sphere. – Encyc. In perspective, projection denotes the appearance or representation of an object on the perspective plane. – Encyc.
  5. In alchimy, the casting of a certain powder, called powder of projection, into a crucible or other vessel full of some prepared metal or other matter, which is to be thereby transmuted into gold. – Encyc.

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