definition of
[interval]

[1] #1 interval n. [time interval] a definite length of time marked off by two instants. wn

[2] #2 interval n. a set containing all points (or all real numbers) between two given endpoints. wn

[3] #3 interval n. [separation] the distance between things; "fragile items require separation and cushioning". wn

[4] #4 interval n. [musical interval] the difference in pitch between two notes. wn