Adjacent Words

Projection definitions

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Webster's 1828 Dictionary

PROJEC'TION, n. [L. projectio.] The act of throwing or shooting forward.
1. A jutting out; extension beyond something else.
2. The act of scheming; plan; scheme; design of something to be executed.
3. 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.
In perspective, projection denotes the appearance or representation of an object on the perspective plane.
4. 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.

WordNet (r) 3.0 (2005)

n
1: a prediction made by extrapolating from past observations
2: the projection of an image from a film onto a screen
3: a planned undertaking [syn: project, projection]
4: any structure that branches out from a central support
5: any solid convex shape that juts out from something
6: (psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else
7: the acoustic phenomenon that gives sound a penetrating quality; "our ukuleles have been designed to have superior sound and projection"; "a prime ingredient of public speaking is projection of the voice" [syn: projection, acoustic projection, sound projection]
8: the representation of a figure or solid on a plane as it would look from a particular direction
9: the act of projecting out from something [syn: protrusion, projection, jut, jutting]
10: the act of expelling or projecting or ejecting [syn: expulsion, projection, ejection, forcing out]

Merriam Webster's

noun Date: 1557 1. a. a systematic presentation of intersecting coordinate lines on a flat surface upon which features from a curved surface (as of the earth or the celestial sphere) may be mapped <an equal-area map projection> b. the process or technique of reproducing a spatial object upon a plane or curved surface or a line by projecting its points; also a graph or figure so formed 2. a transforming change 3. the act of throwing or thrusting forward 4. the forming of a plan ; scheming 5. a. (1) a jutting out (2) a part that juts out b. a view of a building or architectural element 6. a. the act of perceiving a mental object as spatially and sensibly objective; also something so perceived b. the attribution of one's own ideas, feelings, or attitudes to other people or to objects; especially the externalization of blame, guilt, or responsibility as a defense against anxiety 7. the display of motion pictures by projecting an image from them upon a screen 8. a. the act of projecting especially to an audience b. control of the volume, clarity, and distinctness of a voice to gain greater audibility 9. an estimate of future possibilities based on a current trend • projectional adjective Synonyms: projection, protrusion, protuberance, bulge mean an extension beyond the normal line or surface. projection implies a jutting out especially at a sharp angle <those projections along the wall are safety hazards>. protrusion suggests a thrusting out so that the extension seems a deformity <the bizarre protrusions of a coral reef>. protuberance implies a growing or swelling out in rounded form <a skin disease marked by warty protuberances>. bulge suggests an expansion caused by internal pressure <bulges in the tile floor>.

Oxford Reference Dictionary

n. 1 the act or an instance of projecting; the process of being projected. 2 a thing that projects or obtrudes. 3 the presentation of an image etc. on a surface or screen. 4 a a forecast or estimate based on present trends (a projection of next year's profits). b this process. 5 a a mental image or preoccupation viewed as an objective reality. b the unconscious transfer of one's own impressions or feelings to external objects or persons. 6 Geom. the act or an instance of projecting a figure. 7 the representation on a plane surface of any part of the surface of the earth or a celestial sphere (Mercator projection). Derivatives: projectionist n. (in sense 3). Etymology: L projectio (as PROJECT)

Webster's 1913 Dictionary

Orthographic Or`tho*graph"ic, Orthographical Or`tho*graph"ic*al, a. [Cf. F. orthographique, L. orthographus, Gr. ?.] 1. Of or pertaining to orthography, or right spelling; also, correct in spelling; as, orthographical rules; the letter was orthographic. 2. (Geom.) Of or pertaining to right lines or angles. Orthographic or Orthogonal, projection, that projection which is made by drawing lines, from every point to be projected, perpendicular to the plane of projection. Such a projection of the sphere represents its circles as seen in perspective by an eye supposed to be placed at an infinite distance, the plane of projection passing through the center of the sphere perpendicularly to the line of sight.

Webster's 1913 Dictionary

Projection Pro*jec"tion, n. [L. projectio: cf. F. 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. --Davenant. 4. (Persp.) 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. (Geog.) Any method of representing the surface of the earth upon a plane. Conical projection, a mode of representing the sphere, the spherical surface being projected upon the surface of a cone tangent to the sphere, the point of sight being at the center of the sphere. Cylindric projection, a mode of representing the sphere, the spherical surface being projected upon the surface of a cylinder touching the sphere, the point of sight being at the center of the sphere. Globular, Gnomonic, Orthographic, projection,etc. See under Globular, Gnomonic, etc. Mercator's projection, a mode of representing the sphere in which the meridians are drawn parallel to each other, and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. Oblique projection, a projection made by parallel lines drawn from every point of a figure and meeting the plane of projection obliquely. Polar projection, a projection of the sphere in which the point of sight is at the center, and the plane of projection passes through one of the polar circles. Powder of projection (Alchemy.), a certain powder cast into a crucible or other vessel containing prepared metal or other matter which is to be thereby transmuted into gold. Projection of a point on a plane (Descriptive Geom.), the foot of a perpendicular to the plane drawn through the point. Projection of a straight line of a plane, the straight line of the plane connecting the feet of the perpendiculars let fall from the extremities of the given line. Syn: See Protuberance.

Webster's 1913 Dictionary

Projection Pro*jec"tion, n. [L. projectio: cf. F. 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. --Davenant. 4. (Persp.) 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. (Geog.) Any method of representing the surface of the earth upon a plane. Conical projection, a mode of representing the sphere, the spherical surface being projected upon the surface of a cone tangent to the sphere, the point of sight being at the center of the sphere. Cylindric projection, a mode of representing the sphere, the spherical surface being projected upon the surface of a cylinder touching the sphere, the point of sight being at the center of the sphere. Globular, Gnomonic, Orthographic, projection,etc. See under Globular, Gnomonic, etc. Mercator's projection, a mode of representing the sphere in which the meridians are drawn parallel to each other, and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. Oblique projection, a projection made by parallel lines drawn from every point of a figure and meeting the plane of projection obliquely. Polar projection, a projection of the sphere in which the point of sight is at the center, and the plane of projection passes through one of the polar circles. Powder of projection (Alchemy.), a certain powder cast into a crucible or other vessel containing prepared metal or other matter which is to be thereby transmuted into gold. Projection of a point on a plane (Descriptive Geom.), the foot of a perpendicular to the plane drawn through the point. Projection of a straight line of a plane, the straight line of the plane connecting the feet of the perpendiculars let fall from the extremities of the given line. Syn: See Protuberance.

Collin's Cobuild Dictionary

(projections) 1. A projection is an estimate of a future amount. ...the company's projection of 11 million visitors for the first year. ...sales projections. = forecast, estimate N-COUNT 2. The projection of a film or picture is the act of projecting it onto a screen or wall. N-UNCOUNT: usu N n

Soule's Dictionary of English Synonyms

n. 1. Propulsion, throwing, emission. 2. Planning, designing, contriving, scheming. 3. Prominence, protuberance, bulge, process, extension. 4. Plan, delineation, map.

Moby Thesaurus

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