In technical analysis, a crossover occurs when one indicator or moving average line crosses above or below another, generating a trading signal. A bullish crossover happens when a shorter-term moving average crosses above a longer-term one (golden cross), while a bearish crossover is when it crosses below (death cross). Crossovers are among the most widely used technical signals and can be applied to moving averages, MACD, stochastic oscillators, and other indicators.
Example
“When the 50-day moving average crosses above the 200-day moving average on Bitcoin's daily chart (a golden cross), traders interpret it as a bullish signal suggesting the longer-term trend may be shifting upward.”