extraterrestre
- A being or object that originates from outside the Earth or its atmosphere. nounThe scientists were excited to study the extraterrestre life forms discovered on Mars.In many science fiction stories, extraterrestre visitors come to Earth with advanced technology.
- Relating to or originating from outside the Earth or its atmosphere. adjectiveThe movie explored the possibility of extraterrestre civilizations communicating with humans.Astronomers are constantly searching for extraterrestre signals in the vast expanse of space.