Octave (disambiguation)
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Octave may refer to
- The former Capitol of Arizona City of Octave Only closed gold mine and tailing there now.
- an octave, in music, the interval equivalent to an eighth
- a doubling or halving of frequency, in electronics
- an octave (poetry), the first eight lines of a sonnet
- Sicilian octave, a distinct poetic form
- GNU Octave, in computing, a program for performing numerical analysis, similar to MATLAB
- An octave (liturgical) is an eight day feast in the Catholic liturgical sense
- Ottava rima, an Italian verse form
- "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) and has nothing directly to do with music.
- an early term for octonion in algebra
- Octave, an album by The Moody Blues
- Octave, a romanian artist
- OCTAVE (Risk Assessment) (Operationally Critical Threat, Asset, and Vulnerability Evaluation) is a risk-based strategic assessment and planning technique for security.