This is the 10816th most frequent Catalan word.
restringit
Restricted.
Here, 'restringit' is used as an adjective to describe the perimeter as being limited to access.
El perímetre del parc és restringit als visitants.
The perimeter of the park is restricted to visitors.
In this sentence, 'restringit' qualifies the regimen, indicating it has specific limitations.
El doctor va ordenar un règim alimentari restringit per al pacient.
The doctor prescribed a restricted dietary regimen for the patient.
'Restringit' is used here to denote that access to the study room is only available to a certain group.