CFDs are a leverage product and can involve a significant risk of loss. Trading CFDs may not be suitable for all, therefore you should ensure that you understand the risks involved and take into account your individual circumstances.
Trader's Glossary

What is Volatility?

Volatility is a measure of an underlying asset’s tendency to oscillate between highs and lows. Volatility is measured by analysing an asset’s historical price action for certain periods of time that can range anywhere between 30 days to 12 months.