permanence

/pɛʁ.ma.nɑ̃s/
1.
nounfeminineSing

continuity; lastingness (the quality of remaining unchanged or enduring over time)

La permanence du chômage dans la région inquiète les élus.

The persistence of unemployment in the region worries the elected officials.

Synonyms:continuité, durabilité, stabilité
2.
nounfeminineSing

office hours; a session when someone (an official, representative or professional) is available to see the public (drop-in service)

on-call duty; a hotline or service ensuring someone is available

Je vais à la permanence de la mairie pour déposer mon dossier.

I'm going to the town hall's drop-in desk to submit my file.

Synonyms:accueil, guichet, astreinte
3.
nounfeminineSing

study hall; a supervised study period at school

Le prof est absent aujourd'hui, on doit aller en permanence.

The teacher is absent today, we have to go to study hall.

Synonyms:perm, étude, salle d'étude