Where does “nivelavain” come from?

nivelavain (Finnish) comes from Finnish nivel, from Finnish niveljalkainen, from New Latin Arthropoda, from Ancient Greek ἄρθρον, from Ancient Greek ἀραρίσκω, from Ancient Greek -σκω, from Proto-Indo-European -sḱéti — Forms durative or iterative imperfective verbs...

nivelavain (Finnish): swivel head wrench, swivel head spanner

Definitions

  1. swivel head wrench, swivel head spanner

Ancestry of “nivelavain”, step by step

nivelavain traces back through two separate lines of ancestry.

via Finnish nivel

StepLanguageWordMeaning
1Finnishniveljoint; articulation
2FinnishniveljalkainenAn arthropod
3New LatinArthropoda
4Ancient Greekἄρθρονjoint; limb; articulation
5Ancient Greekἀραρίσκωjoin, fasten; fit together, construct; fit,...
6Ancient Greek-σκωPrimitive suffix used to form present-tense...
7Proto-Indo-European-sḱétiForms durative or iterative imperfective verbs...

via Finnish avain

StepLanguageWordMeaning
1Finnishavainkey; code; clef, used especially in compound...
2Finnishavatato open; to unwrap; to turn on
3Proto-Finnicavait'akto open
4Proto-Finno-Ugricaŋa-
Every word from Proto-Indo-European -sḱétiEvery word from Ancient Greek -σκωEvery word from Ancient Greek ἀραρίσκω