Where does “первомайский” come from?

первомайский (Russian) comes from Russian май, from Latin Māius, from Latin Maia, from Ancient Greek μαῖα, from Ancient Greek μήτηρ, from Proto-Hellenic mā́tēr, from Proto-Indo-European méh₂tēr — mother.

первомайский (Russian): May Day

Definitions

  1. May Day

Ancestry of “первомайский”, step by step

первомайский traces back through two separate lines of ancestry.

via Russian май

StepLanguageWordMeaning
1RussianмайMay; second-person singular imperative...
2LatinMāius“month”}} of May
3LatinMaianominative feminine singular of Maius; nominative...
4Ancient Greekμαῖαmidwife; foster mother, nurse; good mother, dame
5Ancient Greekμήτηρmother; source or origin
6Proto-Hellenicmā́tērmother
7Proto-Indo-Europeanméh₂tērmother

via Russian пе́рвый

StepLanguageWordMeaning
1Russianпе́рвыйfirst
Every word from Proto-Indo-European méh₂tērEvery word from Proto-Hellenic mā́tērEvery word from Ancient Greek μήτηρ