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1 definition found
From:
Webster's Revised Unabridged Dictionary (1913)
Pro·jec·tion
n.
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
.
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
.
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