This is the 7009th most frequent Swedish word.
priestley
The word "priestley" is not a Swedish word. It may refer to a proper noun, such as the surname of Joseph Priestley, a historical figure. Could you clarify?
The word 'priestley' here is used as a proper noun referring to the famous chemist Joseph Priestley.
Joseph Priestley var en känd kemist som upptäckte syre.
Joseph Priestley was a famous chemist who discovered oxygen.
The word 'priestley' here specifies the author's surname, used possessively to refer to his experiments.
Jag köpte en bok om Priestleys experiment.
I bought a book about Priestley's experiments.
In this case, 'priestley' denotes ownership or authorship of theories, again as a proper noun.