Topic: SPACE
| Date: | 1300-1400 |
| Language: | Old French |
| Origin: | Latin alienus, from alius 'other' |
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a‧li‧en1

1 very different from what you are used to, especially in a way that is difficult to understand or accept [= strange]:
the alien environment of the city
the alien environment of the city2 belonging to another country or race [= foreign]:
alien cultures
an alien multiracial society
alien cultures
an alien multiracial society