The meaning of ALIEN is belonging or relating to another person, place, or thing : strange. How to use alien in a sentence. Usage of Alien: Usage Guide Synonym Discussion of Alien.

ALIEN definition: a creature from outer space; extraterrestrial. See examples of alien used in a sentence.

Nov 24, 2025 · Asked whether he believes aliens exist, Frank responds with a scientist's perspective: He suggests microbial life may be common across the cosmos, but intelligent civilizations could be rare …

/ ˈeɪ·li·ən / coming from a different country, race, or group; foreign: alien customs (Definition of alien from the Cambridge Academic Content Dictionary © Cambridge University Press)

6 days ago · alien (plural aliens) A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration. quotations

Aug 28, 2025 · Among the most persistent questions that humanity has asked is whether life exists beyond our small blue planet. The word “alien” evokes both fear and fascination, conjuring images of …

Alien means belonging to a different country, race, or group, usually one you do not like or are frightened of.

Alien definition: Owing political allegiance to another country or government; foreign.

Finding alien life would be one of the greatest discoveries in human history. Many others are curious to see how these aliens are similar to life on Earth. They ask questions like what kind of environments …

Oct 25, 2023 · The existence of extraterrestrial life, commonly referred to as "aliens," is a topic of great interest and speculation. Scientists have been actively searching for signs of extraterrestrial life …