meaning of projection

1. The act of throwing or shooting forward.
2. A jutting out; also, a part jutting out, as of a building; an extension beyond something else.
3. The act of scheming or planning; also, that which is planned; contrivance; design; plan.
4. The representation of something; delineation; plan; especially, the representation of any object on a perspective plane, or such a delineation as would result were the chief points of the object thrown forward upon the plane, each in the direction of a line drawn through it from a given point of sight, or central point; as, the projection of a sphere. The several kinds of projection differ according to the assumed point of sight and plane of projection in each.
5. Any method of representing the surface of the earth upon a plane.
6. projection In domain theory, a function, f, which is a idempotent, i. e. ffx=fx and b whose result is no more defined than its argument. E. g. Fx=bottom or Fx=x. In reduction systems, a function which returns some component of its argument. E. g. head, tail, x,y . x. In a graph reduction system the function can just return a pointer to part of its argument and does not need to build any new graph.
7. the act of expelling or projecting or ejecting

Related Words

projection | projection screen | projectionist |

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