interval

noun

• 1an intervening time:after his departure, there was an interval of many years without any meetings the day should be dry with sunny intervals
• a component of activity in interval training:they ran, sprinted, and jogged for four 15-minute intervals at two different times

• 2a pause or break in activity:an interval of mourning
• British a period of time separating parts of a theatrical or musical performance.
• a break between the parts of a sports match: United led 3-0 at the interval

• 3a space between two things; a gap.

• 4the difference in pitch between two sounds.