Definitions for "Saptak"
Keywords:  octave, seven, dhaivat, madya, shadaj
Octave (Sapt means seven. Indian music does not count repeated notes as a part of the same octave. But saptak and octave basically imply the same meaning)
a sequence of all the seven swaras in ascending order is called a saptak.
The group of seven notes covering (in Western terms) the octave.