The golden cross is a chart pattern created when a

The golden cross is a chart pattern created when a shorter term moving average was below a longer term moving average, but it crosses above that moving average.  This is typically seen as a bullish signal.

The golden cross is mostly used with longer term moving averages.  It's an especially strong signal when the 50 day moving average crosses above the 200 day moving average.

http://www.trade-ideas.com/Glossary/Golden_Cross.html

http://stockcharts.com/h-sc/ui?s=ADMD&p=D...9037239325