スペースデブリスペースデブリMeanings1nounspace debris; space junkTechnical and news term for defunct human-made objects in orbit. The synonym 宇宙ゴミ is also used.See also: 宇宙ゴミスペースデブリが増ふえると、宇う宙ちゅう開かい発はつに危き険