Definition of Interval

1. Noun. A definite length of time marked off by two instants.

2. Noun. A set containing all points (or all real numbers) between two given endpoints.

3. Noun. The distance between things. "Fragile items require separation and cushioning"
Exact synonyms: Separation
Generic synonyms: Distance
Specialized synonyms: Clearance

4. Noun. The difference in pitch between two notes.

Definition of Interval

1. n. A space between things; a void space intervening between any two objects; as, an interval between two houses or hills.

2. n. A tract of low ground between hills, or along the banks of a stream, usually alluvial land, enriched by the overflowings of the river, or by fertilizing deposits of earth from the adjacent hills. Cf. Bottom, n., 7.

Definition of Interval

1. Noun. A distance in space. ¹

2. Noun. A period of time. ¹

3. Noun. (music) The difference (a ratio or logarithmic measure) in pitch between two notes, often referring to those two pitches themselves (otherwise known as a dyad). ¹

4. Noun. (mathematics) A connected section of the real line which may be empty or have a length of zero. ¹

5. Noun. (chiefly British) An intermission. ¹

6. Noun. (sports) half time, a scheduled intermission between the periods of play ¹

7. Noun. (cricket) Either of the two breaks, at lunch and tea, between the three sessions of a day's play ¹

¹ Source:

Definition of Interval

1. a space of time between periods or events [n -S]

Medical Definition of Interval

1. The space between two objects or parts, the lapse of time between two recurrences or paroxysms. Origin: L. Vallum = rampart This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Interval

interureteric fold
interval (current term)
interval cycle
interval operation
interval scale
interval variable
interval variables

Literary usage of Interval

Below you will find example usage of this term as found in modern and/or classical literature:

1. Bulletin by Kentucky Geological Survey (1905)
"interval, about 50 feet. 21. Coal 32 inches, at 30 feet above the creek, ... Probably the principal coal would be found in the interval of 315 feet (No. ..."

2. The American Journal of Psychology by Edward Bradford ( Titchener, Granville Stanley Hall (1902)
"There was a very good relation between the normal interval and a certain number of ... Then the estimate oí the interval was made from this relation. ..."

3. Psychological Review by American Psychological Association (1896)
"ment the difficulty involved in letting the filled interval be varied and placed before ... Where the sound is discontinuous, and the interval inconstant, ..."

4. Science by American Association for the Advancement of Science (1899)
"regularity measured by the probable error P and at the interval ta probable error p, it seems justifiable to say that the interval t is ^ times as difficult ..."

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