interval
pluralintervals
Noun
1
a
: a space of time between events or states
a two-month interval between medical treatments
There were long intervals during the game in which nothing exciting happened.
b
British : INTERMISSION
There was a twenty minute interval between acts two and three.
2
: the difference in pitch between two tones
3
: a space between objects, units, points, or states
The posts were set up at regular intervals along the road.
4
: one of a series of fast-paced or intense physical exercises alternated with slower or less intense ones or brief rests for training (as of an athlete) see also INTERVAL TRAINING
5
: a set of real numbers between two numbers either including or excluding one or both of them
Source