Definitions

1. noun

A person or thing that is not native or natural to a place.

“The alien landscape was unlike anything he had ever seen before.”

2. noun

A being from another world or planet, especially one that is hostile or has come to Earth.

“The science fiction movie featured an alien species with advanced technology.”

3. adjective

Not native or natural to a place.

“The alien plant species was discovered in the remote wilderness area.”

4. adjective

From another world or planet, especially with an otherworldly appearance or origin.

“The alien art installation was a mixture of human and extraterrestrial elements.”