This is the 8515th most frequent Dutch word.
herhaling
Repetition.
Here, 'herhaling' is used to mean the act of repeating or reviewing something, in this case, a lesson.
De herhaling van de les was nuttig voor het begrijpen van de stof.
The repetition of the lesson was useful for understanding the material.
In this context, 'herhaling' refers to the act of reperforming an experiment to verify observations.
Bij de herhaling van het experiment werden dezelfde resultaten waargenomen.
During the repetition of the experiment, the same results were observed.
Here, 'herhaling' is used to describe the stylistic repetition of a word in a literary work, like a poem.