departureregulation

noun
UK /dɪˈpɑːtʃə ˌrɛɡjʊˈleɪʃən/
US /dɪˈpɑːrtʃər ˌrɛɡjəˈleɪʃən/

A rule that says when planes or trains can leave.

The airport changed its departure regulation so flights leave earlier in the morning.


OTHER MEANINGS

2. An official rule about when someone must leave a place.

The camp's departure regulation says everyone must be out by noon.

3. A law controlling how goods leave a country.

Customs officers checked the departure regulation for exported goods.

4. A rule about when a bus or train may start its trip.

The new departure regulation keeps the night buses on time.