予よ想そう変へん動どう率りつMeaningsNoun1. expected volatility; implied volatilityKanji used予in advance想heartfelt thought変change動move率ratioComposed of予よ想そうexpectation; anticipation; prediction; forecast; conjectureNoun変へん動どうchange; fluctuationNoun率りつrate; ratio; proportion; percentageNoun