fourth

fourth
    adv 1: in the fourth place; "fourthly, you must pay the rent on
           the first of the month" [syn: {fourthly}, {fourth}]
    adj 1: coming next after the third and just before the fifth in
           position or time or degree or magnitude; "the quaternary
           period of geologic time extends from the end of the
           tertiary period to the present" [syn: {fourth}, {4th},
           {quaternary}]
    n 1: following the third position; number four in a countable
         series
    2: one of four equal parts; "a quarter of a pound" [syn: {one-
       fourth}, {fourth}, {one-quarter}, {quarter}, {fourth part},
       {twenty-five percent}, {quartern}]
    3: the musical interval between one note and another four notes
       away from it
    

Fourth \Fourth\, n.
   1. One of four equal parts into which one whole may be
      divided; the quotient of a unit divided by four.
      [1913 Webster]

   2. (Mus.) The interval of two tones and a semitone, embracing
      four diatonic degrees of the scale; the subdominant of any
      key.
      [1913 Webster]

   3. One coming next in order after the third.
      [1913 Webster]

   {The Fourth}, specifically, in the United States, the fourth
      day of July, the anniversary of the declaration of
      American independence; as, to celebrate the Fourth.
      [1913 Webster]
    

Fourth \Fourth\, a. [OE. fourthe, ferthe, feorthe, AS.
   fe['o]r[eth]a, fr. fe['o]wer four.]
   1. Next in order after the third; the ordinal of four.
      [1913 Webster]

   2. Forming one of four equal parts into which anything may be
      divided.
      [1913 Webster]
    

36 Moby Thesaurus words for "fourth":
      consecutive intervals, degree, diapason, diatessaron,
      diatonic interval, diatonic semitone, enharmonic diesis,
      enharmonic interval, farthing, fifth, fourth part, half step,
      halftone, interval, less semitone, melodic interval, note, octave,
      one-fourth, parallel octaves, quart, quarter, quartern, quarto,
      second, semitone, seventh, sixth, step, third, tone,
      twenty-five cents, twenty-five percent, two bits, unison interval,
      whole step