ninth chord

noun

: a seventh chord with the ninth added : a chord that has an interval (see interval sense 2c) of a ninth from its lowest to highest note when in root position

Word History

First Known Use

1889, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now