Where does “ilmatähystys” come from?

ilmatähystys (Finnish) comes from Finnish tähystys, from Finnish tähystää, from Finnish tähti, from Swedish täkt, from Swedish tå, from Swedish taga, from Old Swedish taka, from Old Norse taka — to touch.

ilmatähystys (Finnish): spotting and tracking of military aircraft for air defense purposes, e.g. to provide early air raid warnings

Definitions

  1. spotting and tracking of military aircraft for air defense purposes, e.g. to provide early air raid warnings

Ancestry of “ilmatähystys”, step by step

ilmatähystys traces back through two separate lines of ancestry.

via Finnish tähystys

StepLanguageWordMeaning
1Finnishtähystyslookout, viewing, monitoring
2Finnishtähystääto keep a lookout; to examine with an endoscope
3Finnishtähtistar; a famous person, celebrity, star; a white...
4Swedishtäkta quarry
5Swedishtoe; a body part
6SwedishtagaDated form of ta
7Old Swedishtakato touch, reach; to grasp, seize; to take, bring
8Old Norsetakato take; taking, capture; taking, seizing
9Proto-Germanictēkanąto touch; to grasp
10Proto-Indo-Europeandeh₁g-to touch

via Finnish Ilma

StepLanguageWordMeaning
1FinnishIlmaair
2Finnish-riUsed to create names of occupations from nouns or...
3Finnish-raForms nouns or adjectives, mostly from nominal...
4Finnish-iA nominal suffix used in eg. ukko → ukki; Used...
5Proto-Uralic-joblique plural
Every word from Proto-Indo-European deh₁g-Every word from Proto-Germanic tēkanąEvery word from Old Norse taka