Where does “helmiäispilvi” come from?
helmiäispilvi (Finnish) comes from Finnish helmiäinen, from Finnish helmi, from Finnish Vilhelmiina, from German Wilhelmina, from German Wilhelm, from Old High German Willahelm, from Old High German helm, from Proto-West Germanic helm — to pierce, strike; to stick; prick; stab.
helmiäispilvi (Finnish): polar stratospheric cloud, nacreous cloud
Definitions
- polar stratospheric cloud, nacreous cloud
Ancestry of “helmiäispilvi”, step by step