Octave

English Meaning

The eighth day after a church festival, the festival day being included; also, the week following a church festival.

1. Music The interval of eight diatonic degrees between two tones of the same name, the higher of which has twice as many vibrations per second as the lower.
2. Music A tone that is eight diatonic degrees above or below another given tone.
3. Music Two tones eight diatonic degrees apart that are sounded together.
4. Music The consonance that results when two tones eight diatonic degrees apart are sounded.
5. Music A series of tones included within this interval or the keys of an instrument that produce such a series.
6. Music An organ stop that produces tones an octave above those usually produced by the keys played.
7. Music The interval between any two frequencies having a ratio of 2 to 1.
8. Ecclesiastical The eighth day after a feast day, counting the feast day as one.
9. Ecclesiastical The entire period between a feast day and the eighth day following it.
10. A group or series of eight.
11. A group of eight lines of poetry, especially the first eight lines of a Petrarchan sonnet. Also called octet.
12. A poem or stanza containing eight lines.
13. Sports A rotating parry in fencing.