ydinkärki
Ydinkärki is a Finnish compound noun that can be translated roughly as “nucleus” or “central core.” It is not a standard technical term in Finnish, but it appears in some contexts to denote the essential center of a larger system, idea, or process. The expression is most commonly found in science communication, journalism, and educational writing, where it serves as a vivid metaphor for what lies at the heart of something.
Etymology and nuance: The word combines ydín (core, nucleus) and kärki (tip, spearhead). Together they convey
Usage and notes: Ydinkärki is not a formal term with a fixed definition, and it is less
See also: Ydin, nucleus of an atom; kärki, tip or spearhead; keskusta, center.