Fifth is the ordinal form of the number five. Fifth or The Fifth may refer to: * Fifth Amendment to the United States Constitution, as in the expression "pleading the Fifth" *

Fifth column A fifth column is any group of people who undermine a larger group or nation from within, usually in favor of an enemy group or another nation. According to Harris Mylonas and Scott Radnitz, "fifth columns" are “domestic actors who work to un ...

, a political term * Fifth disease, a contagious rash that spreads in school-aged children *

Fifth force In physics, there are four observed fundamental interactions (also known as fundamental forces) that form the basis of all known interactions in nature: gravitational, electromagnetic, strong nuclear, and weak nuclear forces. Some speculative the ...

, a proposed force of nature in addition to the four known fundamental forces * Fifth (Stargate), a robotic character in the television series ''Stargate SG-1'' * Fifth (unit), a unit of volume used for distilled beverages in the U.S. *

Fifth-generation programming language A fifth-generation programming language (5GL) is any programming language based on problem-solving using constraints given to the program, rather than using an algorithm written by a programmer. Most constraint-based and logic programming languag ...

* The fifth in a series, or four after the first: see ordinal numbers *

1st Battalion, 5th Marines 1st Battalion, 5th Marines (1/5) is an infantry battalion in the United States Marine Corps based out of Marine Corps Base Camp Pendleton, California consisting of approximately 800 Marines and sailors. Nicknamed ''Geronimo'', it falls under the ...

* The

Fraction A fraction (from la, fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight ...

1/5 * The royal fifth (Spanish and Portuguese), an old royal tax of 20%

Music

* A musical

interval (music) In music theory, an interval is a difference in pitch between two sounds. An interval may be described as horizontal, linear, or melodic if it refers to successively sounding tones, such as two adjacent pitches in a melody, and vertical or h ...

; specifically, a **

perfect fifth In music theory, a perfect fifth is the Interval (music), musical interval corresponding to a pair of pitch (music), pitches with a frequency ratio of 3:2, or very nearly so. In classical music from Western culture, a fifth is the interval fro ...

** diminished fifth ** augmented fifth *

Quintal harmony In music, quartal harmony is the building of harmonic structures built from the intervals of the perfect fourth, the augmented fourth and the diminished fourth. For instance, a three-note quartal chord on C can be built by stacking perfect fourths ...

, in which chords concatenate fifth intervals (rather than the third intervals of tertian harmony) * Fifth (chord) ** A

chord (music) A chord, in music, is any harmonic set of pitches/frequencies consisting of multiple notes (also called "pitches") that are heard as if sounding simultaneously. For many practical and theoretical purposes, arpeggios and broken chords (in whic ...

, member separated from the chord's root by one of the above fifth-intervals ** The

dominant (music) In music, the dominant is the fifth scale degree () of the diatonic scale. It is called the ''dominant'' because it is second in importance to the first scale degree, the tonic. In the movable do solfège system, the dominant note is sung as "S ...

or fifth diatonic scale degree, and the chord built on it *Musical compositions ** Symphony No. 5 (Beethoven), commonly referred to as Beethoven's Fifth ** ''Fifth'' (Soft Machine album), 1972 ** ''The Fifth'' (Bad Boys Blue album), 1989 ** ''The Fifth'' (Dizzee Rascal album), 2013 ** ''The Fifth'' (Obie Trice album), 2019 ** ''5th'' (Lee Michaels album), 1971 ** ''Fifth'' (The Autumn Defense album), 2014 ** "Fifths" (song), a song by deadmau5 * The Fifth (band), a hard rock band from Fayetteville, North Carolina {{disambiguation