This is the 934th most frequent Croatian word.
razgovoru
"Razgovoru" means "conversation" in English.
Here, "razgovoru" is used as a part of a temporal phrase indicating "during [the] conversation."
Tijekom razgovoru, saznali smo mnogo novih stvari.
During the conversation, we learned many new things.
The word "razgovoru" is used in its locative case form, indicating "in [a] conversation."
Sudjelovala sam u zanimljivom razgovoru o knjigama.
I participated in an interesting discussion about books.
"Razgovoru" in this sentence is in the locative case to denote involvement "in [the] conversation."