noun

interval

Translation

interval, break, intermission, gap

There will be a 20-minute interval.

The trains run at ten-minute intervals.

There is a small interval between the houses.

an interval of ((time/distance)) a period of time or space There is an interval of two metres between desks.

at ((time)) intervals happening repeatedly with a certain time between Buses arrive at 15-minute intervals.

Synonyms: break, pause, gap, intermission

From Latin 'inter-' (between) + 'vallum' (wall, rampart). Originally, the space between two ramparts.

Imagine the space 'in between' two 'walls' ('vallum'). This space is the interval.