"caucasians" is a correct and usable word in written English.
You can use it to refer to people who are of the Caucasian race, typically those with light skin and who came from Europe, North Africa, and parts of Asia. For example: "There are many caucasians living in the United States."
Dictionary
caucasians
noun
Plural of Caucasian
Exact(60)
In particular, research has shown that few Caucasians have the optimal version of this gene.
The firm discovered by accident that a lung-cancer drug that flopped among Caucasians worked well in many Chinese.
The recent murder of an ethnic Russian football fan in Moscow by north Caucasians sparked violent riots by ultranationalists and skinheads near the Kremlin.
Yet, as a racist bombing at a Moscow market last month and a near-pogrom against Caucasians in a northern town this week both suggest, Russians are ill-disposed towards the new immigrants their economy increasingly needs.Some, including Mr Putin, have gone so far as to prophesy the death of the nation itself.
"The situation is creating an economic disaster".Malians dependent on the tourist trade hope that the "Toubabs", as Caucasians are known, will soon return.
A scandal last autumn, when policemen manhandled a decorated Dagestani air-force colonel, has not stopped the harassment of Caucasians.
Shaken national pride, a brutal war in the Caucasus and years of mismanaged reforms have landed many without perspectives but with a clear enemy to vent their anger on.Movies stereotyping Caucasians and openly promoting violence against them have been selling outMovies stereotyping Caucasians and openly promoting violence against them have been selling out in recent years.
According to a study carried out by Dr Landau, in co-operation with Marc Parmentier at the Free University of Brussels, and Stephen O'Brien at the National Cancer Institute in Frederick, Maryland, roughly one in every ten Caucasians carries it, although it is strangely absent in African and Asian populations.The bad news, however, is that it is not absolute proof against infection.
This could make life in the capital even chancier and more miserable for Russian Muslims and Caucasians who, as it is, often feel the heavy hand of the police.
This caused a stir, since Japan had slapped down a similar idea peddled in the 1990s by Mahathir Mohamad, Malaysia's former leader, for a regional "caucus" (without Caucasians, it was noted).
As a result, the two researchers are now conducting a follow-up study to look for racial differences.That study is not yet complete but, according to Mr Sherman, "initial results are suggesting that this effect is not confined to Caucasians".
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com