Where does “allekkainlasku” come from?

allekkainlasku (Finnish) comes from Finnish allekkain, from Finnish -kkain, from Finnish -kas, from Proto-Finnic -k'as, from Proto-Finnic -s, from Proto-Finno-Ugric -s.

allekkainlasku (Finnish): a pen and paper algorithm for calculating basic arithmetic operations commonly used in education or when calculators are not available, including for instance long addition and long division

Definitions

  1. a pen and paper algorithm for calculating basic arithmetic operations commonly used in education or when calculators are not available, including for instance long addition and long division

Ancestry of “allekkainlasku”, step by step

allekkainlasku traces back through two separate lines of ancestry.

via Finnish allekkain

StepLanguageWordMeaning
1Finnishallekkainone below another
2Finnish-kkainForms situative adverbs
3Finnish-kas-y, -ful; a suffix that can be used to turn many,...
4Proto-Finnic-k'asForms adjectives from nouns, indicating a...
5Proto-Finnic-sForms nouns
6Proto-Finno-Ugric-s—

via Finnish lasku

StepLanguageWordMeaning
1Finnishlaskudescent, an instance of descending, sliding down...
2Voticlaskõato let go, let loose, release
3Proto-Finniclaskedakto drop, to fall; to release; to let, to allow
4Proto-Uraliclaćke-—
Every word from Proto-Finno-Ugric -s →Every word from Proto-Finnic -s →Every word from Finnish -kas →
allekkainlasku — Etymology, Origin & Word History | Etymology Explorer