This is the 7668th most frequent Swedish word.
tengroth
The word "tengroth" does not have a meaning in Swedish; it appears to be a surname.
Here, 'Tengroth' is used as a possessive proper noun, indicating the ownership of the lecture by a person named Tengroth.
Vi såg Tengroths föreläsning om historia.
We watched Tengroth's lecture on history.
In this sentence, 'Tengroth' is used as an author's name to attribute the book to their creation.
Boken av Tengroth är mycket populär.
The book by Tengroth is very popular.
This sentence uses 'Tengroth' as a proper noun, referring to a specific person's name.