octave

An octave is a musical interval of eight notes. Sing from “do” to “do” — on key — and you will have an octave.

Like octagon and octopus, the key to an octave is “eight.” An octave may be the entire eight-note scale, or just the bottom and top notes, like C and C. Octave can also refer to an eight-line group in an Italian sonnet, or an eight-day festival; in fact, the word comes from the Latin expression octava dies, meaning “eighth day” — as in the eighth festival day after a feast. The ave in octave is usually pronounced “iv.”

Primary Meanings of octave

1.
n
a musical interval of eight tones
2.
n
a rhythmic group of eight lines of verse
3.
n
a feast day and the seven days following it
Full Definitions of octave
1

n a musical interval of eight tones

Synonyms:
musical octave
Type of:
interval, musical interval
the difference in pitch between two notes
2

n a rhythmic group of eight lines of verse

Type of:
stanza
a fixed number of lines of verse forming a unit of a poem
3

n a feast day and the seven days following it

Type of:
church festival, religious festival
a festival having religious significance

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