Extraterrestrial

/ˌɛkstrətəˈrɛstriəl/

Meaning & Definition

noun

A hypothetical or fictional being from outer space.

Many people believe that extraterrestrials have visited Earth throughout history.

An inhabitant of a planet other than Earth.

The discovery of new exoplanets raises the possibility of extraterrestrial civilizations.

adjective

Of or from outside the Earth or its atmosphere.

Scientists are searching for extraterrestrial life forms on distant planets.

Relating to or denoting beings or phenomena that originate beyond Earth.

The movie featured extraterrestrial beings visiting Earth.

The word comes from the Latin 'extra' meaning 'outside' and 'terrestris' meaning 'earthly'.

extraterrestrial intelligence

The hypothetical existence of intelligent life beyond Earth.

extraterrestrial life

Life forms that may exist outside our planet.

alien

A being from another planet.

UFO

An unidentified flying object, often associated with extraterrestrial life.

Some people believe that ETs visit Earth and interact with humans.

space dude

He often talks about meeting a space dude who gave him insights about the universe.