VIX指数びっくすしすうMeanings1nounVIX; Volatility IndexfinanceFinance term for the Chicago Board Options Exchange Volatility Index, often called the 'fear index'. Used in market commentary.VIX指数びっくすしすうが急きゅう上じょう昇しょうした。The VIX surged.投とう資し家かはVIX指数びっくすしすうを注ちゅう視ししている。Investors are closely watching the VIX.