an intervening period of time: an interval of 50 years.
a period of temporary cessation; pause: intervals between the volleys of gunfire.
a space between things, points, limits, etc.; interspace: an interval of ten feet between posts.
Mathematics. the totality of points on a line between two designated points or endpoints that may or may not be included. any generalization of this to higher dimensions, as a rectangle with sides parallel to the coordinate axes.
the space between soldiers or units in military formation.