extraterrestrial

noun

1. a form of life assumed to exist outside the Earth or its atmosphere

Synonym: extraterrestrial beingalien

adj

1. originating or located or occurring outside Earth or its atmosphere

e.g. is there extraterrestrial life?

1. 地外的
Extraterrestrial means happening, existing, or coming from somewhere beyond the planet Earth.

e.g. NASA has started a 10-year search for extraterrestrial intelligence.
美国航空航天局已经启动了一个为期10年的寻找外星人的项目。
e.g. ...extraterrestrial rocks.
地外岩石

2. 地外智慧生物；外星人
Extraterrestrials are living creatures that some people think exist or may exist in another part of the universe.

extraterrestrial

1. 地球外的：extratensive type 外张型 | extraterrestrial 地球外的 | extraterrestrial 外星人

2. 地球之外的：9. verdant 绿色 | 10. extraterrestrial 地球之外的 | 11. aura 气氛

3. 行星际的：extrasternline 船尾增索 | extraterrestrial 行星际的 | Extraterritorial Effect 域外效力