первоисточник

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Russian

Etymology

пе́рвый (pérvyj) +‎ -о- (-o-) +‎ исто́чник (istóčnik)

Pronunciation

Noun

первоисто́чник (pervoistóčnikm inan (genitive первоисто́чника, nominative plural первоисто́чники, genitive plural первоисто́чников)

  1. origin, primary source

Declension