Fifth (?), n.
1. The quotient of a
unit divided by five; one of five equal
parts; a fifth part.
2. (Mus.) The interval of three tones and a semitone, embracing five diatonic degrees of the scale;
the dominant of any key.
Fifth (?), a. [OE.
fifte, fifthe, AS. fīfta. See Five.]
1. Next in order
after the fourth; -- the ordinal of five.
2. Consisting of one of five equal divisions of a thing.
Fifth monarchy men (Hist.), a fanatical sect in England, of the time of the commonwealth, who maintained that there would be a fifth universal monarchy, during which Christ would reign on earth a thousand years. -- Fifth wheel, a horizontal wheel or segment above the fore axle
of a carriage and beneath the body, forming an extended support to prevent careening.