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octave

oc·tave [ óktiv, ók tàyv ] (plural oc·taves)


noun 
Definition:
 
1. music interval on musical scale: an interval between two notes consisting of eight notes inclusive or seven steps on the diatonic scale

2. music note at each end of octave: the note at each end of an octave, especially the higher one, considered in relation to the note at the other end

3. music notes at end of octave together: the two notes at each end of an octave played together

4. music all notes included within octave: the series of notes that fall within an octave, including the octave on each end, or the strings, keys, or other musical devices that produce these notes

5. music organ stop for producing higher notes: an organ stop that causes tones to be produced an octave higher than the keys played alone

6. poetry eight lines of poetry: a group of eight lines of verse, especially the first eight lines of a sonnet, or a poem that consists of eight lines

7. christianity Christian feast day and following week: in Christianity, a feast day and the week following it

8. christianity eighth day after feast day: in Christianity, the eighth day after an octave feast day when the feast day is counted as day one

9. fencing eighth defensive position: the eighth of eight basic defensive positions in fencing, known as a rotating perry

10. eighth item: the eighth in a series

11. set of eight: a set or series of eight

[14th century. Via French< Latin octava, form of octavus "eighth" < octo "eight"]
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