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- Dictionaryalien/ˈeɪlɪən/
adjective
- 1. belonging to a foreign country: "an alien culture" Similar Opposite
- 2. unfamiliar and disturbing or distasteful: "principles that are alien to them" Similar Opposite
noun
- 1. a foreigner, especially one who is not a naturalized citizen of the country where he or she is living: "an enemy alien" Similar Opposite
- 2. a hypothetical or fictional being from another world: "she discovers that the alien's spaceship has crashed" Similar
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The meaning of ALIEN is belonging or relating to another person, place, or thing : strange. How to use alien in a sentence. Synonym Discussion of Alien.
Learn the definition of alien as an adjective, noun, and law term in English. Find out how to say alien in different languages and contexts, such as extraterrestrial, foreign, or illegal.
Alien can mean a creature from outer space, a foreigner, a stranger, or a nonnative species. Learn the origin, history, and usage of this word, as well as its synonyms and related terms.
Learn the various meanings and uses of the word alien, from foreign or strange to extraterrestrial or illegal. See synonyms, pronunciation, examples and word origin of alien.
Learn the meaning of alien as an adjective and a noun, with examples of usage and translations in different languages. Find out how to use alien to describe something strange, foreign, or extraterrestrial.
Something that's alien is different or foreign. In science fiction, space aliens come from other planets. When we talk about aliens, or things that are alien, we're talking about things and people that are different and strange to us — like an alien from outer space.
Definition of alien noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.