1an estimate or forecast of a future situation based on a study of present trends:plans based on projections of slow but positive growth [mass noun]:population projection is essential for planning
2 [mass noun] the presentation of an image on a surface, especially a cinema screen:quality illustrations for overhead projection
[count noun] an image projected on a surface:the band use stage projections featuring moon shots
the ability to make a sound heard at a distance:I taught him voice projection
3 [mass noun] the presentation or promotion of someone or something in a particular way:the legal profession’s projection of an image of altruism
[count noun] a mental image viewed as reality:monsters can be understood as mental projections of mankind’s fears
the unconscious transfer of one’s desires or emotions to another person:we protect the self by a number of defence mechanisms, including repression and projection
4a thing that extends outwards from something else:the chipboard covered all the sharp projections
5 [mass noun] Geometry the action of projecting a figure.
6 [mass noun] the representation on a plane surface of part of the surface of the earth or a celestial sphere.
(also map projection) [count noun] a method for representing part of the surface of the earth or a celestial sphere on a plane surface:the use of different map projections
