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.
Pro*ject"ment (?), n. Design; contrivance; projection. [Obs.]
Clarendon.
Pro*ject"or (?), n. [Cf. F. projeteur.] One who projects a scheme or
design; hence, one who forms fanciful or chimerical schemes.
L'Estrange.
Pro*jec"ture (?), n. [L. projectura: cf. F. projecture.] A jutting out
beyond a surface.
||Pro`jet" (?), n. [F. See Project, n.] A plan proposed; a draft of a
||proposed measure; a project.
Proke (?), v. i. To poke; to thrust. [Obs.] Holland.
Pro*lapse" (?), n. [L. prolapsus, fr. prolapsus, p. p. of prolabi to
fall forward; pro forward + labi to glide, fall.] (Med.) The falling
down of a part through the orifice with which it is naturally
connected, especially of the uterus or the rectum. Dunglison.
Pro*lapse", v. i. To fall down or out; to protrude.
Pro*lap"sion (?), n. [L. prolapsio.] (Med.) Prolapse. [ Written also
prolaption.] [Obs.]
Pro*lap"sus (?), n. [L.] (Med.) Prolapse.
Pro"late (?), a. [L. prolatus, used as p. p. of proferre to bring
forth, to extend; pro + latus, p. p. See Pro-, and Tolerate. ]
Stretched out; extended; especially, elongated in the direction of a
line joining the poles; as, a prolate spheroid; -- opposed to oblate.
Prolate cycloid. See the Note under Cycloid. -- Prolate ellipsoid or
spheroid (Geom.), a figure generated by the revolution of an ellipse
about its major axis. See Ellipsoid of revolution, under Ellipsoid.
Pro*late" (?), v. t. To utter; to pronounce. [Obs.] "Foun-der-ed;
prolate it right." B. Jonson.