|Origin:||entreval, from Latin intervallum 'space between castle walls, interval'|
in‧ter‧val W3 [countable]
the period of time between two events, activities etc:
He left the room, returning after a short interval with a message.
The interval between arrest and trial can be up to six months.
short periods of fine weather between cloudy, rainy weather etc
every week, 20 minutes etc:
The trains run at half-hourly intervals.
something that happens at regular intervals happens often:
The phone rang at regular intervals all afternoon.
objects that are placed at regular intervals have all been placed at the same distance from each other:
Trees had been planted at regular intervals.
5 British English
a short period of time between the parts of a play, concert etc [= intermission American English]
We can get some drinks in the interval.
the amount of difference in pitch between two musical notes