(music) That which unfolds a single recurrent interval in a series that closes with a return to the initial pitch class.

(mathematics) the interval [0,1], that is the set of all real numbers x such that zero is less than or equal to x and x is less than or equal to one / (telecommunications) symbol duration time.

(pathology) In epidemiology of communicable (infectious) diseases, the time period between the onset of symptoms with the primary patient and the onset of symptoms with the secondary patient (infected by primary).

The distance between two notes on the diatonic scale. / An interlude in some performance during which music is played.

(cartography) The vertical distance on the ground which separates adjacent contour lines on a map.

(music) An interval that exceeds a major or perfect interval by a semitone.

(informal, music) The tritone

plural of interval class

(statistics) An ordinal variable with the additional property that the magnitudes of the differences between two values are meaningful.

The difference in elevation represented by the space between adjacent contour lines