Where does “kerta-avain” come from?

kerta-avain (Finnish) comes from Finnish avain, from Finnish avata, from Proto-Finnic avait'ak, from Proto-Finno-Ugric aŋa-.

kerta-avain (Finnish): one-time pad, one-time pad key

Definitions

  1. one-time pad, one-time pad key

Ancestry of “kerta-avain”, step by step

kerta-avain traces back through two separate lines of ancestry.

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-

via Finnish kerta

StepLanguageWordMeaning
1Finnishkertatime, occasion; time; times; also once, when the...
2Proto-Finnickertatime
3Proto-Indo-Europeankert-times; to weave, twist together; time
4Proto-Turkic*keŕ-to travel, tour
Every word from Proto-Finno-Ugric aŋa-Every word from Proto-Finnic avait'akEvery word from Finnish avata
kerta-avain — Etymology, Origin & Word History | Etymology Explorer