Octave meaning : An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a doubling or halving in pitch frequency. The pitch an octave higher than a given pitch. A coupler on an organ which allows the organist to sound the note an octave above the note of the key pressed (cf sub-octave) A poetic stanza consisting of eight lines; usually used as one part of a sonnet. The eighth defensive position, with the sword hand held at waist height, and the tip of the sword out straight at knee level. The day that is one week after a feast day in the Latin rite of the Catholic Church. An eight-day period beginning on a feast day in the Latin rite of the Catholic Church. An octonion. Any of a number of coherent-noise functions of differing frequency that are added together to form Perlin noise. The subjective vibration of a planet. Consisting of eight; eight in number.