Where does “ydinisku” come from?

ydinisku (Finnish) comes from Finnish isku, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

ydinisku (Finnish): nuclear strike

Definitions

  1. nuclear strike

Ancestry of “ydinisku”, step by step

ydinisku traces back through two separate lines of ancestry.

via Finnish isku

StepLanguageWordMeaning
1Finnishiskuhit, blow; impact; attentat, attack, strike, raid
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns

via Finnish ydin

StepLanguageWordMeaning
1Finnishydincore, kernel, the central part of something;...
2FriulianUdinUdine
3Arabicالدِّين
Every word from Proto-Finnic -uEvery word from Finnish -uEvery word from Finnish isku