Alien

The term alien refers to any and all species outside the subject's hypergenome, or the collection of biological evolutionary strains native to the world of origin of the subject's species.

Today, the use of the word "alien" is often associated with a negative connotation and is therefore not commonly used.

Related terms

• Xenobiology is the study of "alien" biology.
• Xenolinguistics is the study of "alien" languages.
• "Anti-alien" sentiment is known as racism or speciesism, often seen as a result of xenophobia, the fear of alien spcies.
• Xenophilia is a sexual fetish involving attraction to members of alien species.