Where does “Стрийщина” come from?

Стрийщина (Ukrainian) comes from Ukrainian Стрий, from Proto-Slavic strъjь — uncle.

Ancestry of “Стрийщина”, step by step

StepLanguageWordMeaning
1UkrainianСтрийpaternal uncle
2Proto-Slavicstrъjьuncle
Every word from Proto-Slavic strъjь →Every word from Ukrainian Стрий →