Where does “kirjainlyhenne” come from?

kirjainlyhenne (Finnish) comes from Finnish lyhenne, from Finnish lyhentää, from Finnish lyhetä, from Finnish -etä, from Proto-Finnic -t'ak, from Proto-Uralic -ta- — Forms verbs from nouns; Forms causative verbs...

kirjainlyhenne (Finnish): initialism term formed from the initials of several words, but which is itself pronounced letter by letter

Definitions

  1. initialism term formed from the initials of several words, but which is itself pronounced letter by letter

Ancestry of “kirjainlyhenne”, step by step

kirjainlyhenne traces back through two separate lines of ancestry.

via Finnish lyhenne

StepLanguageWordMeaning
1FinnishlyhenneAn abbreviation
2Finnishlyhentääto shorten; to abbreviate; to reduce or pay back...
3FinnishlyhetäTo shorten, to become shorter
4Finnish-etäFront vowel variant of -eta
5Proto-Finnic-t'akForms verbs from nominal stems, generally with a causative, factitive or instrumental meaning
6Proto-Uralic-ta-Forms verbs from nouns; Forms causative verbs...

via Finnish kirjain

StepLanguageWordMeaning
1Finnishkirjainletter; Genitive plural form of kirja
2Finnishkirjatato book, log, register; to register
3Finnishkirjabook; quire
4Proto-Finnickirjadecoration, carving, pattern
Every word from Proto-Uralic -ta-Every word from Finnish -etäEvery word from Proto-Finnic -t'ak