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4 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
pa·rab·o·la
/pəˈræbələ/
拋物線
From:
Taiwan MOE computer dictionary
parabola
拋物線
From:
Webster's Revised Unabridged Dictionary (1913)
Pa·rab·o·la
n.
;
pl
.
Parabolas
Geom.
(a)
A
kind
of
curve
;
one
of
the
conic
sections
formed
by
the
intersection
of
the
surface
of
a
cone
with
a
plane
parallel
to
one
of
its
sides
.
It
is
a
curve
,
any
point
of
which
is
equally
distant
from
a
fixed
point
,
called
the
focus
,
and
a
fixed
straight
line
,
called
the
directrix
.
See
Focus
.
(b)
One
of
a
group
of
curves
defined
by
the
equation
y
= ax
n
where
n
is
a
positive
whole
number
or
a
positive
fraction
.
For
the
cubical parabola
n
= 3;
for
the
semicubical parabola
n
=
See
under
Cubical
,
and
Semicubical
.
The
parabolas
have
infinite
branches
,
but
no
rectilineal
asymptotes
.
◄
►
From:
WordNet (r) 2.0
parabola
n
:
a
plane
curve
formed
by
the
intersection
of
a
right
circular
cone
and
a
plane
parallel
to
an
element
of
the
curve
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