Where does “ruiskaus” come from?

ruiskaus (Finnish) comes from Finnish ruiskahtaa, from Finnish -ähtää, from Proto-Finnic -ahtadak, from Proto-Uralic -ašta-.

Ancestry of “ruiskaus”, step by step

StepLanguageWordMeaning
1Finnishruiskahtaato splatter or splash quickly, to squirt of small amounts of liquid
2Finnish-ähtääFront vowel variant of -ahtaa
3Proto-Finnic-ahtadakForms momentane verbs
4Proto-Uralic-ašta-
Every word from Proto-Uralic -ašta-Every word from Finnish -ähtääEvery word from Finnish ruiskahtaa