interval

A period of time between two events, moments, or points.

• There was a brief interval of silence before the presenter answered the difficult question.

• The alarms sound at regular fifteen-minute intervals throughout the building.

A space between two physical objects or points.

• Trees were planted along the boulevard at regular intervals of twenty feet.

• Check the fence line to ensure the posts maintain an equal interval.

The difference in pitch between two musical tones.

• She practiced identifying each interval by ear during her daily music theory lesson.

• An octave is the most familiar interval in Western music systems.