noun
experimental unmanned spacecraft
Wasei-eigo term derived from English 'free flyer'. Refers to an unmanned spacecraft designed for experiments, typically operating in orbit without a crew.
wasei-eigo (Japanese-coined English), from free flyer
JAXAは新しいフリーフライヤーを打ち上げた。
JAXA launched a new experimental unmanned spacecraft.
フリーフライヤーは軌道上で様々な実験を行う。
The free flyer conducts various experiments in orbit.