An eight-line stanza or poem. See ottava rima and triolet. The first eight lines of an Italian or Petrarchan sonnet are also called an octave.

c. 1300, utaves (plural, via Anglo-French from popular Old French form oitieve, otaves), reformed in early 15c., from Medieval Latin octava, from Latin octava dies "eighth day," fem. of octa [..]

Eight full tones above the key note where the scale begins and ends.

a range of frequencies whose upper frequency limit is twice that of its lower frequency limit. For example, the 1000 Hertz octave band contains noise energy at all frequencies from 707 to 1414 Hertz.

Not to be confused with octavo, below, an octave is the first part of an Italian or Petrarchan sonnet; an octave is a set of eight lines that rhyme according to the pattern ABBAABBA. See sonnet, below [..]

n. A note at this interval above or below any other, considered in relation to that other.

An eight-line unit, which may constitute a stanza

eight lines of verse linked by a pattern of end rhymes, especially the first eight lines of an Italian, or Petrarchan, sonnet. See also sestet

An eight-line stanza.

a poem or stanza of eight lines in a poem

In poetry, the first eight lines of the Italian, or Petrarchan, sonnet.

A language primarily intended for numerical computations. It can be used for solving numerical problems and experiments, as well as providing extensive graphics capabilities for data visualisation and [..]

the interval between two noises which have a frequency ratio of 2:1.

The interval between two sounds having a basic frequency ratio of 2 to 1. (Sound)

A stanza comprising of eight lines; sometimes known as an octet or octastich.  

The interval between two frequencies differing by exactly 2:1.

The interval between a given musical tone and one with double or half the frequency.

(n) a feast day and the seven days following it(n) a musical interval of eight tones(n) a rhythmic group of eight lines of verse

The musical interval between two tones which are related by the doubling of the fundamental frequency. For example, two tones of 100Hz and 200Hz are an octave apart, as are two tones of 150Hz and 300H [..]

1. A musical interval of eight notes. Every note has exactly double the number of vibrations per second of its corresponding note an octave lower and half the vibrations of its corresponding note an o [..]

the pitch interval between a tone and the seventh tone above it in a diatonic scale, or between the letter name of a tone and its recurrence above or below. The vibration ratio of an octave is two to [..]

a Latin term for eight; with reference to the distance between notes of the same letter name, eight notes higher or lower.

[0] two frequencies

An series of eight notes being the interval between two. One of the notes will have twice of half the frequency of the other. (An A is at 440Hz, and the next A is at 880Hz)

a frequency ratio of 2:1. A musical distance (interval) of 12 semitones.

The interval in which one pitch is doubled (or halved) in frequency by another pitch. The octave is found in virtually all music systems.

The same note name eight note names higher or lower. Any two notes with the same name that are eight notes a part.

Musical term referring to 2 notes that are 8 full tones apart, indicating the start and end of a scale

   The distance between one note and the next note (higher or lower) of the same pitch name.

In traditional music there are only 12 different notes, then they repeat themselves. When you move up or down 12 notes, you will find a higher or lower version of the note you started on. This is an o [..]

Eight full tones above the key note where the scale begins and ends.

When you go eight steps up or down the notes of a scale, you reach a note that is an octave higher or lower than the note you started on. Notes an octave apart have the same letter name.

An interval bounded by two pitches with the same pitch names and the higher of whose frequencies is twice the lower.

the interval produced by two tones that sound similar and have the same note name, but are 12 half-steps apart. Each ascending successive octave doubles in frequency (i.e. 220Hz, 440Hz…). See also “in [..]

Two notes with the same name, but at a different location on the fretboard.   

An interval of twelve semitones. The frequency of the octave note is exactly double the frequency of the lower note.

Interval outlined by two pitches of the same letter name, the higher of which is twice the frequency of the lower; or interval between two notes 12 half steps apart.

The word octave

a range of tones where the highest tone occurs at twice the frequency of the lowest tone.

process that increases or decreases the frequency of sound in music.

A difference of pitch where one tone has a frequency that is double or one-half of the frequency of another tone.

The interval between any two frequencies having a ratio of 2:1.

When you hear the word "octave," the first thing that comes to mind probably isn't poetry. It's probably a singer's vocal range, as in "Holy cow! Mariah Carey has a five- [..]

French form of Octavius.