Where does “ojittaminen” come from?

ojittaminen (Finnish) comes from Finnish ojittaa, from Finnish -ittaa, from Finnish -ttää, from Proto-Finnic -ttadak, from Proto-Uralic -kta-.

Ancestry of “ojittaminen”, step by step

StepLanguageWordMeaning
1FinnishojittaaTo ditch, to cut a trench
2Finnish-ittaaVariant of -ttaa used with some bisyllabic stems
3Finnish-ttääFront vowel variant of -ttaa
4Proto-Finnic-ttadakCreates causative verbs from regular verbs,...
5Proto-Uralic-kta-—
Every word from Proto-Uralic -kta- →Every word from Finnish -ttää →Every word from Finnish -ittaa →