Octave

An octave, in music, is 'Octave' may also refer to:

Poetry

 * Octave (poetry), the first eight lines of a sonnet
 * Sicilian octave, a distinct poetic form
 * Ottava rima, an Italian verse form

Music

 * Octave (music), the interval between one musical pitch and another with half or double its frequency.
 * Octave (album), an album by The Moody Blues
 * The Octāves, an all-male a cappella group from the University of Richmond

People

 * Octave Chanute, French-born American railway engineer and aviation pioneer.
 * Octave Levenspiel, American professor of chemical engineering.
 * Octave Mirbeau, French journalist.
 * Octave Tassaert, French painter.

Computing

 * GNU Octave, a program for performing numerical analysis, mostly compatible with MATLAB

Science

 * Octave (electronics) a doubling or halving of frequency, in physics and engineering
 * Electromagnetic radiation can be divided into eighty-one octaves
 * "The Law of Octaves" is a concept from the history of the development of the Periodic Table of Chemical Elements (see John Newlands or Mendeleev)
 * an early term for octonion in algebra

Other

 * Octave celebration, a major religious celebration in Luxembourg
 * Octave (horse), a champion graded stakes race thoroughbred racehorse
 * Octave (liturgical), an eight-day feast in the liturgical sense, especially in the Roman Catholic tradition