Stepspan
The stepspan of an interval is the number of scale steps it subtends. It is the zero-based version of number or degree, which are both one-based. Thus all 2nds have stepspan 1, all 3rds have stepspan 2, etc.
The stepspan of an interval is the number of scale steps it subtends. It is the zero-based version of number or degree, which are both one-based. Thus all 2nds have stepspan 1, all 3rds have stepspan 2, etc.