A composition for nine instruments or nine voices.
A byte of nine bits.
A group of nine nuclear or subatomic particles.
A group of six notes played in the time of four, with accents on the first, third and fifth notes.
A group of six notes played in the time of four, with accents on the first and fourth notes; a double triplet.
A group of six objects.
A group of six notes played in the time of four, with an accent only on the first note.
One of a group of six persons or animals born from the same mother during the same birth.