interval
Pronunciation: /ˈɪntəv(ə)l/
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


Origin:
Middle English: from Old French entrevalle, based on Latin intervallum 'space between ramparts, interval', from inter- 'between' + vallum 'rampart'