Noun

(en noun)

A distance in space.

* Milton

'Twixt host and host but narrow space was left, / A dreadful interval .

A period of time.

the interval between contractions during childbirth

(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).

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

(chiefly, British) An intermission.

(sports) half time, a scheduled intermission between the periods of play

* {{quote-news

, year=2011 , date=November 12 , author= , title=International friendly: England 1-0 Spain , work=BBC Sport citation , page= , passage=Spain made three substitutions at the interval , sending on former Arsenal captain Fabregas, Chelsea's Juan Mata and Liverpool keeper Pepe Reina for Xavi, David Silva and Casillas.}}

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

Noun

(en noun)

The act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty.

The state or result of having deviated; a transgression; an act of sin; an error; an offense.

(contract law) The voluntary and unnecessary departure of a ship from, or delay in, the regular and usual course of the specific voyage insured, thus releasing the underwriters from their responsibility.

(Absolute Deviation) The shortest distance between the center of the target and the point where a projectile hits or bursts.

(statistics) For interval variables and ratio variables, a measure of difference between the observed value and the mean.

(metrology) The signed difference between a value and its reference value.