Olonetsian
/ɒləˈnɛtsɪən/(also Olonecian, Olonetzian)
noun
A Finno-Ugric language, one of the main varieties of Karelian; = Olonets.
Origin
1930s; earliest use found in Willem Laurens Graff (b. 1890). From the name of Olonets + -ian, after Russian oloneckij.