Where does “kaksoiskupera” come from?

kaksoiskupera (Finnish) comes from Finnish kaksois-, from Finnish kaksi, from Proto-Finnic kakci, from Proto-Uralic *kakta.

kaksoiskupera (Finnish): biconvex

Definitions

  1. biconvex

Ancestry of “kaksoiskupera”, step by step

StepLanguageWordMeaning
1Finnishkaksois-double, binary, twin
2Finnishkaksitwo
3Proto-Finnickakcitwo
4Proto-Uralic*kakta—
Every word from Proto-Uralic *kakta →Every word from Proto-Finnic kakci →Every word from Finnish kaksi →