無 人 機(むじんき)

むじんき

noun

unmanned aircraft; drone

technology military

1. unmanned aircraft; drone

an aircraft or vehicle that operates without a human pilot on board

無人機(むじんき)が空(そら)を飛(と)んでいる。

A drone is flying in the sky.

災害(さいがい)現場(げんば)で無人機(むじんき)が活躍(かつやく)している。

Drones are playing an active role at disaster sites.

政府(せいふ)は無人機(むじんき)の飛行(ひこう)に関(かん)する新(あたら)しい規制(きせい)を導入(どうにゅう)した。

The government introduced new regulations regarding drone flights.

Refers to any unmanned aircraft, from small consumer drones to large military vehicles. Composed of 無人(むじん) (unmanned) + 機(き) (machine, aircraft). The loanword ドローン is more common in casual conversation, while 無人機(むじんき) appears more frequently in news, government documents, and formal contexts.

Common collocations

無人機(むじんき)による攻撃(こうげき) — drone attack/strike
無人機(むじんき)の飛行(ひこう) — drone flight
無人機(むじんき)規制(きせい) — drone regulations
小型(こがた)無人機(むじんき) — small unmanned aircraft
軍事用(ぐんじよう)無人機(むじんき) — military drone

Similar words

ドローン — drone (loanword, more casual and widely used in everyday speech)
無人(むじん)航空機(こうくうき) — unmanned aerial vehicle (UAV; formal/technical synonym)
遠隔操作(えんかくそうさ) — remote control (the method of operating drones)

Related Words

Compare: ドローン (drone)

Compare: 遠隔操作(えんかくそうさ) (remote control)

general

Added 2026.4.21 18:13 · Revised 2026.9.2 13:02

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