A jazz sus chord or dominant 9sus4 chord is a seventh chord on the fifth scale degree of the key with a suspended fourth and an added ninth. Functionally, it can be written as V9sus4 or V7sus9.
ISO (International Organization for Standardization) is an independent, non-governmental membership organization and the world's largest developer of voluntary International Standards.
iso-. 1. Prefix meaning equal, like. 2. chemistry Prefix indicating isomer of (isomerism); e.g., isocyanate vs. cyanate. 3. immunology Prefix designating similarity with respect to species; in recent years, the meaning has shifted to similarity with respect to genetic constitution of individual people.