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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There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...