Where does “rasu” come from?

rasu (Latvian) comes from Latvian rasa, from Proto-Balto-Slavic rasā́ˀ, from Proto-Indo-European h₁rṓs — (trickling) liquid, moisture.

rasu (Latvian): accusative singular form of rasa; instrumental...

Definitions

  1. accusative singular form of rasa; instrumental...

Ancestry of “rasu”, step by step

StepLanguageWordMeaning
1Latvianrasadew; very light rain, drizzle; tiny, dew-like...
2Proto-Balto-Slavicrasā́ˀdew
3Proto-Indo-Europeanh₁rṓs(trickling) liquid, moisture
Every word from Proto-Indo-European h₁rṓs →Every word from Proto-Balto-Slavic rasā́ˀ →Every word from Latvian rasa →
rasu — Etymology, Origin & Word History | Etymology Explorer