interval

noun

• 1an intervening time or space:after his departure, there was an interval of many years without any meetings the intervals between meals were very short

• 2a pause; a break in activity:an interval of mourning
• British an intermission separating parts of a theatrical or musical performance.
• British a break between the parts of an athletic contest:leading 3-0 at the interval

• 3a space between two things; a gap.
• the difference in pitch between two musical sounds.

• 4a component of activity in interval training:use one day a week for short, sprint intervals