• Fifth Amendment to the United States Constitution
  Fifth Amendment to the United States Constitution
  The Fifth Amendment to the United States Constitution, which is part of the Bill of Rights, protects against abuse of government authority in a legal procedure. Its guarantees stem from English common law which traces back to the Magna Carta in 1215...
  
  , as in the expression "Pleading the Fifth"
• Fifth column
  Fifth column
  A fifth column is a group of people who clandestinely undermine a larger group such as a nation from within.-Origin:The term originated with a 1936 radio address by Emilio Mola, a Nationalist General during the 1936–39 Spanish Civil War...
  
   - a political term
• Fifth disease
  Fifth disease
  Erythema infectiosum or fifth disease is one of several possible manifestations of infection by erythrovirus, previously called parvovirus B19. The disease is also referred to as slapped cheek syndrome, slapcheek, slap face or slapped face. In Japan the disease is called 'apple sickness' or...
  
   - a contagious rash that spreads in school aged children
• Fifth force
  Fifth force
  Occasionally, physicists have postulated the existence of a fifth force in addition to the four known fundamental forces. The force is generally believed to have roughly the strength of gravity Occasionally, physicists have postulated the existence of a fifth force in addition to the four known...
  
   - a proposed force of nature in addition to the four known fundamental forces
• 1st Battalion 5th Marines
  1st Battalion 5th Marines
  1st Battalion, 5th Marines 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 command of the 5th Marine Regiment and the 1st Marine Division...
  
  
• Fifth (Stargate), a robotic character in the television series Stargate SG-1
• Fifth-generation programming language
  Fifth-generation programming language
  A fifth-generation programming language is a programming language based around solving problems using constraints given to the program, rather than using an algorithm written by a programmer...
  
  
• The fifth in a series, or four after the first: see ordinal numbers (linguistics)
• Fifth (unit)
  Fifth (unit)
  A fifth is a unit of volume formerly used for distilled beverages in the United States, and is equal to one fifth of a gallon, quart, or 25 fluid ounces ; it has been superseded by the metric fifth of 750 mL, approximately 1% smaller, which is the standard capacity of wine bottles...
  
  , a unit of volume used for distilled beverages in the U.S.
• A quintile
  Quintile
  Quintile may refer to:*Income quintiles, a division of households by income into five quantiles*Quintiles, a biotechnology research company based in the United States...
  
  , or 20%
• A fraction
  Fraction (mathematics)
  A fraction represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, we specify how many parts of a certain size there are, for example, one-half, five-eighths and three-quarters.A common or "vulgar" fraction, such as 1/2, 5/8, 3/4, etc., consists...
  
  , such as 1/5

Music

• A musical interval
  Interval (music)
  In music theory, an interval is a combination of two notes, or the ratio between their frequencies. Two-note combinations are also called dyads...
  
  ; specifically, a perfect fifth
  Perfect fifth
  In classical music from Western culture, a fifth is a musical interval encompassing five staff positions , and the perfect fifth is a fifth spanning seven semitones, or in meantone, four diatonic semitones and three chromatic semitones...
  
  , diminished fifth
  Tritone
  In classical music from Western culture, the tritone |tone]]) is traditionally defined as a musical interval composed of three whole tones. In a chromatic scale, each whole tone can be further divided into two semitones...
  
   or augmented fifth
  Augmented fifth
  In classical music from Western culture, an augmented fifth is an interval produced by widening a perfect fifth by a chromatic semitone. For instance, the interval from C to G is a perfect fifth, seven semitones wide, and both the intervals from C to G, and from C to G are augmented fifths,...
  
  
• A chord (music)
  Chord (music)
  A chord in music is any harmonic set of two–three or more notes that is heard as if sounding simultaneously. These need not actually be played together: arpeggios and broken chords may for many practical and theoretical purposes be understood as chords...
  
   member separated from the chord's root by one of the above intervals
• The dominant
  Dominant (music)
  In music, the dominant is the fifth scale degree of the diatonic scale, called "dominant" because it is next in importance to the tonic,and a dominant chord is any chord built upon that pitch, using the notes of the same diatonic scale...
  
   or fifth diatonic scale degree, and the chord built on it
• Symphony No. 5 (Beethoven)
  Symphony No. 5 (Beethoven)
  The Symphony No. 5 in C minor, Op. 67, was written by Ludwig van Beethoven in 1804–08. This symphony is one of the most popular and best-known compositions in all of classical music, and one of the most often played symphonies. It comprises four movements: an opening sonata, an andante, and a fast...
  
   is commonly referred to as Beethoven's Fifth
• Fifth (album), an album by Soft Machine
• perfect fifth
  Perfect fifth
  In classical music from Western culture, a fifth is a musical interval encompassing five staff positions , and the perfect fifth is a fifth spanning seven semitones, or in meantone, four diatonic semitones and three chromatic semitones...
  
  
• tritone
  Tritone
  In classical music from Western culture, the tritone |tone]]) is traditionally defined as a musical interval composed of three whole tones. In a chromatic scale, each whole tone can be further divided into two semitones...
  
  : diminished fifth/augmented fourth
• augmented fifth
  Augmented fifth
  In classical music from Western culture, an augmented fifth is an interval produced by widening a perfect fifth by a chromatic semitone. For instance, the interval from C to G is a perfect fifth, seven semitones wide, and both the intervals from C to G, and from C to G are augmented fifths,...
  
  
• fifth (chord)
  Fifth (chord)
  In music, the fifth factor of a chord is the note or pitch five scale degrees above the root or tonal center. When the fifth is the bass note, or lowest note, of the expressed chord, the chord is in second inversion ....
  
  
• Dominant (music)
  Dominant (music)
  In music, the dominant is the fifth scale degree of the diatonic scale, called "dominant" because it is next in importance to the tonic,and a dominant chord is any chord built upon that pitch, using the notes of the same diatonic scale...
  
  , fifth degree of the diatonic scale
• Quintal harmony
  Quartal and quintal harmony
  In music, quartal harmony is the building of harmonic structures with a distinct preference for the intervals of the perfect fourth, the augmented fourth and the diminished fourth. Quintal harmony is harmonic structure preferring the perfect fifth, the augmented fifth and the diminished fifth...