The fifth degree of a diatonic scale in traditional music-theory, designated with Roman numeral "V" or Arabic numeral "5".
The triad whose root is the fifth degree of a diatonic scale, also designated with Roman numeral "V".
The tonalsoft.com website is almost entirely the work of one person: me, Joe Monzo. Please reward me for my knowledge and effort by choosing your preferred level of financial support. Thank you.