interval UK /ˈɪntəvəʊ/US /ˈɪntɚvəl/ noun7 •A period of time. •(UK, India) An intermission. •half time, a scheduled intermission between the periods of play.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. — 2011 •Either of the two breaks, at lunch and tea, between the three sessions of a day's play. •The difference (a ratio or logarithmic measure) in pitch between two notes, often referring to those two pitches themselves (otherwise known as a dyad). •A connected section of the real line which may be empty or have a length of zero. •A distance in space.'Twixt host and host but narrow space was left, / A dreadful interval. — 1667 formsintervals