This is the 5583rd most frequent Catalan word.
dietari
A "dietari" is a diary or journal.
In this sentence, 'dietari' is used to refer to a personal diary or notebook where someone, like Maria, records daily events or important notes.
El dietari de la Maria està ple d'anotacions interessants.
Maria's diary is full of interesting notes.
Here, 'dietari' is used to mean a journal or a logbook where someone documents specific professional or academic activities.
En el seu dietari, el professor va registrar les observacions dels experiments.
In his journal, the professor recorded the observations of the experiments.
In this context, 'dietari' refers generically to commercial notebooks that are formatted and used as diaries or planners, which people can purchase.