Last Updated：2025/11/30
(automotive) A car door similar to scissor door, but while scissor doors move straight up via hinge points at the bottom of the A-pillar, butterfly doors move up and out via hinges along the A-pillar.
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butterfly door
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Source Word
butterfly door
Noun
of stationary or locomotive boilers
Japanese Meaning
自動車用の特殊な扉。はさみドアと似ているが、はさみドアが車体下部のAピラーで直線的に上昇するのに対し、バタフライドアはAピラーに沿ったヒンジを用いて上方かつ外側に開く方式のドア。
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(architecture)
A
door
which
pivots
on
a
central
axis,
used
in
locations
with
a
pressure
differential
between
the
two
sides
of
the
door,
so
that
forces
exhibited
do
not
inhibit
opening
and
closing
of
the
door,
due
to
contrary
action
of
forces
on
the
two
halves
of
the
door
which
open
inwards
and
outwards
at
the
same
time.
（ plural ）
