Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
 n. The act of projecting or the condition of being projected.
 n. A thing or part that extends outward beyond a prevailing line or surface: spiky projections on top of a fence; a projection of land along the coast.
 n. A plan for an anticipated course of action: "facilities [that] are vital to the projection of U.S. force . . . in the Pacific” ( Alan D. Romberg).
 n. A prediction or an estimate of something in the future, based on present data or trends.
 n. The process of projecting a filmed image onto a screen or other viewing surface.
 n. An image so projected.
 n. Mathematics The image of a geometric figure reproduced on a line, plane, or surface.
 n. A system of intersecting lines, such as the grid of a map, on which part or all of the globe or another spherical surface is represented as a plane surface.
 n. Psychology The attribution of one's own attitudes, feelings, or suppositions to others: "Even trained anthropologists have been guilty of unconscious projection—of clothing the subjects of their research in theories brought with them into the field” ( Alex Shoumatoff).
 n. Psychology The attribution of one's own attitudes, feelings, or desires to someone or something as a naive or unconscious defense against anxiety or guilt.
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. Something which projects, protrudes, juts out, sticks out, or stands out.
 n. The action of projecting or throwing or propelling something.
 n. The display of an image by devices such as movie projector, video projector, overhead projector or slide projector.
 n. A forecast or prognosis obtained by extrapolation
 n. A belief or assumption that others have similar thoughts and experiences as oneself
 n. The image that a translucent object casts onto another object.
 n. An image of an object on a surface of fewer dimensions.
 n. A transformation of one thing into something else, e.g. applications of functions.
 n. Any of several systems of intersecting lines that allow the curved surface of the earth to be represented on a flat surface. The set of mathematics used to calculate coordinate positions.
 n. A linear transformation which maps vectors from a vector space onto a subspace, or which is idempotent.
from the GNU version of the Collaborative International Dictionary of English
 n. The act of throwing or shooting forward.
 n. A jutting out; also, a part jutting out, as of a building; an extension beyond something else.
 n. The act of scheming or planning; also, that which is planned; contrivance; design; plan.
 n. 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. The several kinds of projection differ according to the assumed point of sight and plane of projection in each.
 n. Any method of representing the surface of the earth upon a plane.
 n.
from The Century Dictionary and Cyclopedia
 n. The act of projecting, throwing, or shooting forward: as, the projection of a shadow upon a bright surface; hence, the act or process of throwing, as it were, something that is subjective into the objective world; the act of giving objective or seeming reality to what is subjective: as, the projection of a sensation of color into space as the quality of an object (a colored thing).
 n. That image or figure which results from the act of projecting an idea or a sensation.
 n. That which projects; a part projecting or jutting out, as of a building extending beyond the surface of the wall; a prominence.
 n. The act of projecting, or scheming or planning: as, he undertook the projection of a new enterprise.
 n. In geometry, the act or result of constructing rays or right lines through every point of a figure, according to certain rules.
 n. The act or result of constructing rays through every point of a figure, all passing through one point, and cutting these rays by a plane or other surface, so as to form a section on that surface which corresponds point for point with the original figure.
 n. In chartography, the act or result of constructing a figure upon a plane or other surface, which corresponds point by point with a sphere, spheroid, or other figure; a mapprojection (which see, below).
 n. The mental operation in consequence of which objects of the imagination or retinal impressions appear to be seen external to us.
 n. In alchemy, the act of throwing anything into a crucible or other vessel, especially the throwing of a portion of philosopher's stone upon a metal in fusion with the result of transmuting it; hence, the act or result of transmutation of metals; humorously, the crisis of any process, especially of a culinary process.
 n. Same as gromonic mapprojection.
 n. Same as zenithal mapprojection. — Clarke's mapprojection, a perspective mapprojection in which the distance of the eye from the center of the sphere is 1.368 times the radius. This projection was invented by the English geodesist Colonel A. R. Clarke. — Collignon's mapprojection.
 n. The quadrilateral mapprojection.
 n. The central equivalent projection. — Conform mapprojection. Same as orthomorphic mapprojection. — Conical mapprojection.
 n. Properly, a mapprojection the development of a tangent or secant cone upon which the sphere is conceived to have been projected by lines of projection perpendicular to its axis.
 n. Any projection which may naturally be regarded as the development of a projection upon a cone. — Cylindrical mapprojection.
 n. A parallelogrammatic or square mapprojection.
 n. A mapprojection showing the earth in repeated stripes, as Mercator's.
 n. A perspective or central projection in which the center is at infinity. — Delisle's mapprojection, the secant conical projection proposed by Mercator, and applied by J. N. Delisle to the great map of Russia. — Discontinuous mapprojection, a mapprojection which follows one law in one part, and another in another part. Also called broken mapprojection, irregular mapprojection. — English mapprojection. Same as globular mapprojection . — Equidistant mapprojection, a zenithal mapprojection in which the radius of each almucantar is equal to its angular distance from the zenith. This mapprojection, invented by the French mathematician Postel in the sixteenth century, is frequently employed for starmaps, etc. — Equivalent mapprojection, a mapprojection which represents all equal surfaces on the spheroid by equal areas on the map. Also called equalsurface mapprojection. — Equivalent stereographic mapprojection, an equivalent mapprojection in which the parallels are represented by parallel straight lines at distances from the equator proportional to the tangents of half the latitudes. This projection was proposed in 1862 by M. de Prépetit Foucaut. — Flamsteed's mapprojection. Same as sinusoidal mapprojection. — Foucaut's mapprojection, the equivalent stereographic mapprojection. — Fournier's mapprojection.
 n. A meridional mapprojection in which the meridians are equidistant ellipses, while the parallels are circular arcs equally dividing the central and extreme meridians.
 n. A mapprojection in which the meridians are as in , but the parallels are straight lines as in the meridional orthogonal projection. These mapprojections were proposed in 1646 by the French geographer Fournier. — Gauss's mapprojection. Same as Lagrange's mapprojection. — Glareanus's mapprojection, a discontinuous mapprojection differing from that of Apianus only in setting the parallels at the same distances as in the meridional orthographic mapprojection. It was invented by the Swiss mathematician Loriti or Glareanus, and published in 1527.
 n. Globular mapprojection. Any projection of a hemisphere with curvilinear meridians and parallels.
 n. A meridional hemispherical mapprojection in which the equator is a straight line, the semimeridians are circular arcs dividing the equator into equal parts, and the parallels are circular arcs dividing the extreme and central meridians into equal parts. This projection, invented in 1660 by the Italian Nicolosi, has been extensively employed ever since.
 n. La Hire's mapprojection. — Gnomonic mapprojection.
 n. A perspective mapprojection from the center of the sphere. All great circles are represented by straight lines.
 n. Hence, by extension — Any mapprojection representing all great circles by straight lines. Such a projection can contain but one half of the sphere on an infinite plane. This system is probably ancient. — Harding's mapprojection. Same as Lagrange's mapprojection. — Herschel's mapprojection. Same as Lagrange's mapprojection. — Homalographic (or homolographic) mapprojection, an equivalent mapprojection in which the meridians are ellipses meeting at the poles, and the parallels and equator are parallel straight lines: invented by the German mathematician Mollweide in 1805. It has been considerably used. — Intermediary mapprojection, a zenithal mapprojection in which, z being the zenith distance of an almucantar, r its radius on the map, and n a constant
 n. r = n tan z/n.
 n. This projection was invented by A. Germain. — Irregular mapprojection. Same as discontinuous mapprojection. — Isocylindric mapprojection. an equivalent mapprojection the development of a cylinder upon which the sphere has been orthogonally projected. It was invented by the German mathematical philosopher J. H. Lambert. — Isomeric mapprojection, the zenithal equivalent mapprojection, invented by J. H. Lambert, and the best of the equivalent projections. — Isospherical mapprojection. Same as isomeric mapprojection. — Jaeger's mapprojection, a discontinuous projection in the shape of an eightpointed star. It was proposed by Jaeger in 1865, and was modified by Petermann. — James's mapprojection, a perspective mapprojection in which the center of projection is distant from that of the sphere by 1.5 times the radius. It was invented by the English geodesist Sir Henry James. — Lagrange's mapprojection, an orthomorphic mapprojection in which the sphere is shown a finite number of times on a finite number of sheets, but in which all the north poles (or zeniths) coincide, as well as all the south poles (or nadirs). The projection was invented by J. H. Lambert, and has been called by many names. It has been used in a government map of Russia. — La Hire's mapprojection, a perspective projection having the center of projection at a distance from the center of the sphere equal to 1.707 times the radius. This projection, proposed by the French geodesist La Hire in 1701, has been frequently used. — Littrow's mapprojection, an orthomorphic projection in which the meridians are hyperbolas and the parallels ellipses, all these conies being confocal. This projection has two north and two south poles, all four coincident at infinity, and shows the sphere twice on two sheets, which are merely perversions of each other. It has many remarkable properties. It was invented by the Bohemian astronomer Littrow in 1833. — Lorgna's mapprojection. Same as isomeric mapprojection. — Mapprojection by balance of errors, that zenithal projection which makes the “misrepresentation” a minimum, as determined by least squares. If r is the radius of an almucantar on the chart, z its zenith distance, and Z that of the limit of the chart, which cannot exceed 126° 24′ 53″, then
 n. r = cot ½z log sec ½z + tan ½z cot½Z log sec ½Z.
 n. Mapprojection by development, a projection upon a developable surface which is then developed into a plane. — Mercator's mapprojection, an orthomorphic mapprojection in which the whole sphere is shown in equal repeating stripes. The point at infinity represents the whole sphere, and the zenith and nadir do not elsewhere appear. As ordinarily used, the poles are taken as these points, when the meridians appear as equidistant parallel lines, and the parallels as parallel lines cutting them at distances from the equator proportional to log tan ½ latitude. This has the advantage that the points of the compass preserve the same directions all over the map. This projection, invented by the Flemish cosmographer Mercator in 1550, is the most useful of all. — Meridional mapprojection, a mapprojection which seems to be projected upon the plane of a meridian, showing the poles at the extremities of a central meridian. — Modified Flamsteed's mapprojection. Same as Bonne's mapprojection. — Mollweide's mapprojection. Same as homolographic mapprojection. — Murdoch's mapprojection, one of three conical mapprojections in which the part of the cone of which the map is a reduced development is equal to the spherical zone represented. These were invented by Patrick Murdoch in 1758. — Orthographic mapprojection, a perspective mapprojection from an infinitely distant center. — Orthomorphic mapprojection, a mapprojection which preserves all angles — that is, the shapes of all infinitesimal portions of the sphere. When one such mapprojection has been obtained, say the polar stereographic, which is the simplest, all others may be derived from this by a transformation of the plane. Let r and
θ be the polar coördinates of any point on the polar stereographic projection, let i denote the imaginary whose square is — 1, and let F denote any function having a differential coefficient. If, then, F (r cosθ ; + r sinθ .i) be put into the form x + yi, x and y will be the rectangular coördinates of the corresponding point on another orthomorphic projection. Also called conform mapprojection. — Parallelogrammatic mapprojection, a mapprojection in which the parallels are represented by equidistant straight lines, and the meridians by equidistant straight lines perpendicular to the parallels. This is an ancient projection. Also called rectangular mapprojection. — Parent's mapprojection, one of two perspective mapprojections. In Parent's first mapprojection the center of projection is distant from the center of the sphere 1.595 times the radius. In his second this distance is 1.732. — Perspective mapprojection, a true projection of the sphere by straight lines from a center of projection intersecting the plane of the map. — Petermann's mapprojection, a discontinuous mapprojection showing the sphere in the form of an eightpointed star. It is used to decorate the titlepage of Stieler's atlas. — Polar mapprojection, a mapprojection showing one of the poles in the center. — Polyconic mapprojection, a mapprojection in which the surface of the earth is cut into an infinite number of zones parallel to the equator; a central meridian is then developed into a straight line, and then each zone is developed separately. This projection, invented by Hassler, superintendent of the United States Coast Survey, is used in all government maps of the United States. — Quadrilateral mapprojection, a broken equivalent projection in which one meridian has the form of a square, of which another meridian and the equator are the diagonals. It was invented by Collignon. — Quincuncial mapprojection, an orthomorphic projection of the earth into repeating squares, invented by C. S. Peirce in 1876. — Rectangular mapprojection. Same as parallelogrammatic mapprojection. — Ruysch's mapprojection, a conical projection in which the cone cuts the equator and has its vertex at one pole, and the sphere is projected upon the cone by lines perpendicular to the axis. It was invented by Ruysch in 1508. — Sanson's mapprojection. Same as sinusoidal mapprojection. — Schmidt's mapprojection, a meridional mapprojection in which the meridians are represented by ellipses cut at equal distances by the parallels. It was proposed by the physicist G. G. Schmidt in 1801. — Sinusoidal mapprojection, an equivalent map projection in which the parallels are equidistant straight lines to which the central meridian is perpendicular. This projection (so called from the form of the meridians) was first used by the French chartographer Sanson in 1650. — Square mapprojection, the projection of a map which the successive meridians and parallels cut up into squares. — Stenoterous mapprojection, an equivalent projection which represents the whole earth on the sector of a circle, the pole being at the center and the parallels concentric circles. It was invented by J. H. Lambert. — Stereographic mapprojection, the simplest of all projections, representing the whole sphere once on one infinite plane, the parts at infinity being considered as a point. All circles on the sphere are represented circles, and the angles are preserved. The stereographic projection of the sphere is a perspective projection, a point on the surface being the center of projection; but the stereographic mapprojection of the spheroid is not a perspective projection. The stereographic projection was known to the ancients, and has always been employed for special purposes. — Textor's mapprojection, a modification of the isocylindrical map, by J. C. von Textor, 1808. — Transverse mapprojection, a meridional mapprojection. — Trapeziform mapprojection, a mapprojection in which the space between two meridians and two parallels is represented by a trapezoid, the sides of which are divided proportionally to determine other straight lines representing meridians and parallels. — Werner's mapprojection, that equivalent mapprojection which has the parallels concentric and equidistant arcs of circles, with the north pole at the center. The whole sphere has a heart shape. This was invented by Johann Werner, 1514. — Zenithal mapprojection, a mapprojection which is symmetrical about a central point, the almucantars being represented by concentric circles.  n. The foot of the perpendicular from a point to a straight line is the projection of the point upon the line.
 n. The localization of pressure sensation at the extremity of a pencil, cane, etc., held in the hand, rather than in the hand itself.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
 n. the representation of a figure or solid on a plane as it would look from a particular direction
 n. the act of projecting out from something
 n. the acoustic phenomenon that gives sound a penetrating quality
 n. the projection of an image from a film onto a screen
 n. a prediction made by extrapolating from past observations
 n. any solid convex shape that juts out from something
 n. (psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
 n. a planned undertaking
 n. any structure that branches out from a central support
 n. the act of expelling or projecting or ejecting
Etymologies
from Wiktionary, Creative Commons Attribution/ShareAlike License
Examples

Media projection is a probaganda for her to make more and more nonsense.

The projectors of the private bank in 1714, not only reprinted this pamphlet bearing date 1688, but they prepared a separate scheme of their own which they termed a projection for a bank of credit founded on land security. 32 The presentation of the petition of the projectors for incorporation produced considerable discussion, in which the public to some extent participated, through the various pamphlets then published by the disputants. 33
Currency and Banking in the Province of the MassachusettsBay [excerpts]

"The answer to the first question (Will others like it?) requires people to start with their own product preferences, which we call projection," write authors Caglar Irmak

This kind of projection is based in the same psychological mechanism that triggers the fears associated with superstitious beliefs in primitive, tribal communities.

And we're well on our way, and our projection is we'll have 1.4 million new young people in 4H because of the science programs alone.

It shows an axon, the long, slender projection from a nerve cell that carries electrical impulses to the synapse.

If that projection is true, I don't think we'll be doing all that well in the stock market, either.
Friedman on the Battle of Ideas, Arnold Kling  EconLog  Library of Economics and Liberty

However, projection is always a delusion, not a reality.
Think Progress » Coburn: ‘I love gridlock’ because it means ‘we’re not passing things.’

Yes, young Skywalker, the projection is strong in the trolls.
Think Progress » VIDEO: The Extreme, Violent Rhetoric Of GOP Lawmakers

Another projection from a right wing terrorist. mike48 says:
centurydictionaryfan commented on the word projection
"Quincuncial mapprojection, an orthomorphic projection of the earth into repeating squares, invented by C. S. Peirce in 1876."
just a sliver from the Century Dictionary definition
February 9, 2011