- (WordNet, 2009) ⇒ http://wordnetweb.princeton.edu/perl/webwn?s=interval
- S: (n) time interval, interval (a definite length of time marked off by two instants)
- S: (n) interval (a set containing all points (or all real numbers) between two given endpoints)
- S: (n) interval, separation (the distance between things) "fragile items require separation and cushioning"
- S: (n) interval, musical interval (the difference in pitch between two notes)