Atlantilaisesta
Atlantilaisesta is the elative singular form of the Finnish adjective-noun Atlantilainen, meaning from Atlantean or of Atlantean origin. It is used when describing origin or source in phrases where the noun it modifies is in the elative or other cases that require the elative form to express “from Atlantean.” In Finnish, the elative is formed with the suffix -sta/-stä, so Atlantilaisesta is the proper elative form of Atlantilainen for singular use.
Usage examples include: “Atlantilaisesta kulttuurista kertova teos” (a work describing Atlantean culture); “Atlantilaisesta vedestä otetut näytteet”
The form is one of several declension forms of the base adjective, with nominative Atlantilainen, genitive