Pronunciation: (āl'yun, ā'lē-un), [key]
1. a resident born in or belonging to another country who has not acquired citizenship by naturalization (distinguished from citizen).
2. a foreigner.
3. a person who has been estranged or excluded.
4. a creature from outer space; extraterrestrial.

1. residing under a government or in a country other than that of one's birth without having or obtaining the status of citizenship there.
2. belonging or relating to aliens: alien property.
3. unlike one's own; strange; not belonging to one: alien speech.
4. adverse; hostile; opposed (usually fol. by to or from): ideas alien to modern thinking.
5. extraterrestrial.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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