death cross
n.— «In addition to all the support, the 50-day SMA crossed above the 200-day earlier last the week. This pattern is referred to as a “golden cross” and is viewed by many as a long-term buy signal (a downside crossover is known as a “dead cross” and is a sell signal).» —“Can chips help cushion the Nasdaq?” by Tomi Kilgore MarketWatch Mar. 21, 2005. (source: Double-Tongued Dictionary)
Further reading
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