heilahteluun
Heilahteluun is the illative singular form of the Finnish noun heilahtelu. Heilahtelu denotes fluttering, oscillation, or wobble—a movement or state characterized by small, rapid shifts. The illative case ending -uun expresses movement into that state, so heilahteluun can be translated as “into fluttering” or “into an oscillation.” The term is used in descriptive Finnish across general, literary, and technical contexts.
Etymology and morphology: Heilahtelu comes from the verb heilahdella, meaning “to swing, to jerk, to flutter,”
Usage: Heilahteluun appears when describing a transition to an oscillatory or fluttering condition. It is common
- Laitteen vakaus häiriöiden vuoksi ajautui heilahteluun. (The device’s stability, due to disturbances, drifted into flutter.)
- Rakenteeseen kohdistettu kuorma sai sen heilahteluun. (The load applied to the structure caused it to enter
Note: The term is relatively specialized; in everyday language Finnish speakers may describe the situation using
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