Definition of Parabolic
Par`a`bol´ic
a.
1.
1.
Of
the
nature
of
a
parable
;
expressed
by
a
parable
or
figure
;
allegorical
;
as
,
parabolical
instruction
.
2.
(Geom.)
Having
the
form
or
nature
of
a
parabola
;
pertaining
to
,
or
resembling
,
a
parabola
;
as
,
a
parabolic
curve
.
Parabolic conoid
a
paraboloid
;
a
conoid
whose
directing
curve
is
a
parabola
.
See
Conoid
.
Parabolic mirror
(Opt.)
a
mirror
having
a
paraboloidal
surface
which
gives
for
parallel
rays
(
as
those
from
very
distant
objects
)
images
free
from
aberration
.
It
is
used
in
reflecting
telescopes
.
Parabolic spindle
the
solid
generated
by
revolving
the
portion
of
a
parabola
cut
off
by
a
line
drawn
at
right
angles
to
the
axis
of
the
curve
,
about
that
line
as
an
axis
.
Parabolic spiral
a
spiral
curve
conceived
to
be
formed
by
the
periphery
of
a
semiparabola
when
its
axis
is
wrapped
about
a
circle
;
also
,
any
other
spiral
curve
having
an
analogy
to
the
parabola
.
Related Words
parabolical
,
rounded
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