Where does “morsetusavain” come from?

morsetusavain (Finnish) comes from Finnish morsetus, from Finnish morsettaa, from Finnish -ttää, from Proto-Finnic -ttadak, from Proto-Uralic -kta-.

Ancestry of “morsetusavain”, step by step

morsetusavain traces back through two separate lines of ancestry.

via Finnish morsetus

StepLanguageWordMeaning
1Finnishmorsetuswiring, telegraphing
2Finnishmorsettaato Morse to transmit by Morse code
3Finnish-ttääFront vowel variant of -ttaa
4Proto-Finnic-ttadakCreates causative verbs from regular verbs,...
5Proto-Uralic-kta-

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-Uralic -kta-Every word from Finnish -ttääEvery word from Proto-Finnic -ttadak