alien

[ eyl-yuhn, ey-lee-uhn ]
/ ˈeɪl yən, ˈeɪ li ən /

noun

adjective

Origin of alien

1300–50; Middle English < Middle French < Latin aliēnus, equivalent to *alies- (ali-, base of alius other + -es- noun suffix) + -nus adj. suffix
SYNONYMS FOR alien
2 See stranger.
3 outcast.
7 exotic, foreign.
Related formsnon·al·ien, noun, adjectivepro·al·ien, adjective

Usage note

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for alien

British Dictionary definitions for alien

alien

/ (ˈeɪljən, ˈeɪlɪən) /

noun

adjective

verb

(tr) rare to transfer (property, etc) to another
Derived Formsalienage (ˈeɪljənɪdʒ, ˈeɪlɪə-), noun

Word Origin for alien

C14: from Latin aliēnus foreign, from alius other
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for alien

alien

[ ālē-ən ]

Introduced to a region deliberately or accidentally by humans. Starlings, German cockroaches, and dandelions are species that are alien to North America but have become widely naturalized in the continent. Compare endemic indigenous.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.