The phrase "alien element" is correct and usable in written English.
It can be used to describe something that is foreign, unusual, or not fitting within a particular context or environment.
Example: "The new policy introduced an alien element to the company's culture, causing confusion among employees."
Alternatives: "foreign component" or "unfamiliar factor".
There is, however, one alien element in America's improving touch.
Free-style swimming is devised for movement through an alien element.
For religious settlers, Arabs are an alien element in the organic unity of Jews and their land.
On the contrary, these individual creatures have their alien element, and we are unable to inhabit their existence.
Many prominent musicians were Arab by birth or acculturation, but the alien element continued to play a predominant role in Islamic music.
But while the alien element is pure B-movie, the rest of the show is grounded in reality, with the real-life Trump-Clinton battle waging in the background.
Emphasizing Bruckner's supposed victimization by manipulative editors, Haas presented his edition as the reclaiming of Bruckner's pure original texts, purged of alien elements, for "Greater Germany".
These alien elements seem to signal the destabilisation of heteronormative society and, in their bright, colourful patterns, celebrate the far more complicated, fluid identities that have replaced it.
In a recent interview, a reporter from the daily newspaper Rasmei Kampuchea repeatedly asked her about her introduction of alien elements into an art form that has been handed down painstakingly from teacher to pupil over the generations.
The two men do share something beyond the magnetism of celebrity: a suspicion that the nation is under threat from alien elements; a narrow definition of what it means to be an American; and an expressed belief that they speak the impolitic truth on behalf of those who are suppressed by political correctness.
These groups of travelers were seen as alien elements, sometimes described as exotic, but usually more or less menacing groups outside mainstream society [6].
