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

  1. polar stratospheric cloud, nacreous cloud

Ancestry of “helmiäispilvi”, step by step

helmiäispilvi traces back through two separate lines of ancestry.

via Finnish helmiäinen

StepLanguageWordMeaning
1Finnishhelmiäinennacre, mother-of-pearl
2Finnishhelmipearl; bead; gem
3FinnishVilhelmiina—
4GermanWilhelmina—
5GermanWilhelmWilliam
6Old High GermanWillahelmWilliam
7Old High Germanhelmhelmet
8Proto-West Germanichelmhelmet
9Proto-Germanichelmazhelmet
10Proto-Germanichalmazhalm; stem; stalk; straw; hay
11Proto-Indo-Europeanḱolh₂mosstalk
12Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

via Finnish Pilvi

StepLanguageWordMeaning
1FinnishPilvicloud visible mass of water droplets suspended in the air; mass of dust, steam or smoke
2Finnishpilvicloud; hashish, marijuana
3Proto-Finnicpilvicloud
4Proto-Uralicpilwecloud
Every word from Proto-Indo-European ḱelh₂- →Every word from Proto-Indo-European ḱolh₂mos →Every word from Proto-Germanic halmaz →