octave

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English

Etymology

From Latin octavus (“eighth”). Doublet of octavo, ochava, and oitava.

Pronunciation

  • (UK) IPA(key): /ˈɒktɪv/, /ˈɒkteɪv/
    • Audio (Southern England)(file)
  • (US) IPA(key): /ˈɑktɪv/, /ˈɑkteɪv/
  • Rhymes: (UK) -ɒktɪv, (UK) -ɒkteɪv, (US) -ɑktɪv

Noun

octave (plural octaves)

  1. (music) An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a doubling or halving in pitch frequency.
    The melody jumps up an octave at the beginning, then later drops back down an octave.
    The singer was known for astounding clarity over her entire five-octave range.
    The octave has a pitch ratio of 2:1.
  2. (music) The pitch an octave higher than a given pitch.
    The bass starts on a low E, and the tenor comes in on the octave.
  3. (music) A coupler on an organ which allows the organist to sound the note an octave above the note of the key pressed (cf sub-octave)
  4. (poetry) A poetic stanza consisting of eight lines; usually used as one part of a sonnet.
  5. (fencing) The eighth defensive position, with the sword hand held at waist height, and the tip of the sword out straight at knee level.
    • 2009, Ray Finkleman, (Please provide the book title or journal name):
      If they always do a lateral parry quarte, and never a semicircular octave, that gives you an opening.
  6. (Christianity) The day that is one week after a feast day in the Latin rite of the Catholic Church.
    • 2000, John Southworth, Shakespeare the Player:
      […] the Chamberlains' records of the companies' visits to their towns are, for the most part, not precisely dates, but merely group them together […] within their annual accounting period which normally […] ran from Michaelmas (29 September) to Michaelmas, or its octave (6 October).
    • 2014, Jennifer Gregory Miller, (Please provide the book title or journal name):
      It was extended to the entire Church by 1814, and then in 1913 the feast was transferred to September 15, the octave day of the Birth of Mary and the day after the Exaltation of the Cross.
  7. (Christianity) An eight-day period beginning on a feast day in the Latin rite of the Catholic Church.
    • 1870, The Night Hours of the Church, trans. Rev. J. M. Neale
      Of an Octave the Office is said. or at least commemorated, (when any Sunday or Feast intervene), for eight successive days.
  8. A small cask of wine, one eighth of a pipe.
  9. (mathematics, obsolete) An octonion.
  10. (signal processing) Any of a number of coherent-noise functions of differing frequency that are added together to form Perlin noise.
  11. (astrology) The subjective vibration of a planet.
    • 2016, Kristin Fontana, The Beach Reporter:
      Mercury then joins its higher octave and generous counterpart Jupiter early next week, and it opens gates of opportunity.

Abbreviations

  • (interval): P8

Derived terms

Related terms

Translations

See also

Verb

octave (third-person singular simple present octaves, present participle octaving, simple past and past participle octaved)

  1. Alternative form of octavate

Adjective

octave (not comparable)

  1. (obsolete) Consisting of eight; eight in number.

Anagrams

French

Pronunciation

Noun

octave f (plural octaves)

  1. octave

Descendants

  • → Turkish: oktav

Further reading

Interlingua

Pronunciation

Adjective

octave

  1. eighth

Latin

Numeral

octāve

  1. vocative masculine singular of octāvus
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