This is the 55th most frequent Croatian word.
tijekom
"During" or "throughout."
The word 'tijekom' is used to indicate a time span within which the action occurs.
Tijekom predavanja, profesor je objasnio novu lekciju.
During the lecture, the professor explained the new lesson.
The word 'tijekom' here signifies the period of summer as the time reference for the action.
Tijekom ljeta mnogi turisti posjećuju obalu.
During the summer, many tourists visit the coast.
In this case, 'tijekom' is used to indicate the contextual timing of the conversation in relation to the dinner.