Interval | Mean of interval in English Dictionary

/ˈɪntɚvəl/

• Noun
• a period of time between events
1. a three-month interval between jobs
2. There might be long intervals during/in which nothing happens.
3. The sun shone for brief intervals throughout the day.
• the difference in pitch between two notes
• with an amount of space in between
1. There are signs at regular intervals along the outside wall.
2. The chairs were placed at intervals of two feet.

• with an amount of time in between
1. It recurs at (regular) intervals of every six months.