Last Updated：2025/11/20
(informal, US, military, aviation, research, espionage, ufology) A secret military facility, an airport, an airbase in Nevada Test and Training Range, Nevada, United States; A military base in Nevada, where advanced military aircraft are developed; foreign military aircraft are evaluated; and rumored to be where the US government hides extra-planetary alien visitors.
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Area 51
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Source Word
Area 51
Proper noun
US
informal
(informal,
US,
military,
aviation,
research,
espionage,
ufology)
A
secret
military
facility,
an
airport,
an
airbase
in
Nevada
Test
and
Training
Range,
Nevada,
United
States;
A
military
base
in
Nevada,
where
advanced
military
aircraft
are
developed;
foreign
military
aircraft
are
evaluated;
and
rumored
to
be
where
the
US
government
hides
extra-planetary
alien
visitors.
Japanese Meaning
アメリカ、ネバダ州にある非公開の秘密軍事施設。先進軍用航空機の開発、外国の軍用機の評価が行われ、宇宙人に関する噂も存在する場所。
Sense（1）
(informal,
US,
military,
aviation,
research,
espionage,
ufology)
A
secret
military
facility,
an
airport,
an
airbase
in
Nevada
Test
and
Training
Range,
Nevada,
United
States;
A
military
base
in
Nevada,
where
advanced
military
aircraft
are
developed;
foreign
military
aircraft
are
evaluated;
and
rumored
to
be
where
the
US
government
hides
extra-planetary
alien
visitors.
