Streszczenie
On the basis of Polish and East Slavic historical and dialect sources, the author discusses
the genesis, history, and extent of the lexem graduśnik (“thermometer”) in the Polish language.
It is the East Slavic loanword that appeared in the colloquial Polish language in the North-
Eastern borderland and in some Polish dialects in the 19th century. It has never surfaced in
the literary Polish language. It would always be considered a linguistic mistake. In Polish
dialects, the lexeme was noted in Mazovia and Lesser Poland.