- In map making, the representation on a plane of the earth's surface (or the celestial sphere) or of a part thereof.
- Any of various other two-dimensional pictorial representations of a three-dimensional object.Axonometric projection.
An example of a projection is a movie.
An example of a projection is a bar coming out of a wall.
An example of a projection is a bank guessing what future interest rates will be.
An example of projection is seeing a sad person while you're sad and assuming they are sad for the same reasons.
Spiky projections on top of a fence; a projection of land along the coast.