octave

noun oc·tave \ ˈäk-tiv , -təv , -ˌtāv \

Definition of octave

1 :an 8-day period of observances beginning with a festival day
2 a :a stanza of eight lines :ottava rima
b :the first eight lines of an Italian sonnet
3 a :a musical interval embracing eight diatonic degrees
b :a tone or note at this interval
c :the harmonic combination of two tones an octave apart
d :the whole series of notes, tones, or digitals comprised within this interval and forming the unit of the modern scale
e :an organ stop giving tones an octave above those corresponding to the keys
4 :the interval between two frequencies (as in an electromagnetic spectrum) having a ratio of 2 to 1
5 :a group of eight

Examples of octave in a Sentence

  1. He sang the song an octave lower.

Recent Examples of octave from the Web

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Origin and Etymology of octave

Middle English, from Anglo-French, from Medieval Latin octava, from Latin, feminine of octavus eighth, from octo eight — more at eight


OCTAVE Defined for English Language Learners

octave

noun

Definition of octave for English Language Learners

  • music : the difference in sound between the first and eighth note on a musical scale


OCTAVE Defined for Kids

octave

noun oc·tave \ ˈäk-tiv \

Definition of octave for Students

1 :a space of eight steps between musical notes
2 :a tone or note that is eight steps above or below another note or tone


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