extraterrestrial

word

/ˌɛkstɹətɝˈɛstɹiəɫ/
/ˌɛkstɹətəɹˈɛstɹɪəl/

Definition

Something or someone that comes from outside the Earth or does not belong to Earth, often used to describe alien life or things from other planets.

Usage & Nuances

Common in science fiction and scientific talk about life beyond Earth. Used as both adjective ('extraterrestrial life') and noun ('an extraterrestrial'). Less common in casual speech; 'alien' is often used instead.

Example Sentences

Scientists are searching for extraterrestrial life.

basic

The movie is about an extraterrestrial visiting Earth.

basic

Some people believe that extraterrestrial beings have visited us.

basic

The government denied any evidence of extraterrestrial encounters.

natural

Do you think extraterrestrial life will ever contact us?

natural

Many science fiction books describe meetings with extraterrestrial civilizations.

natural