Definition of "mushrooming" []

• Present participle of mushroom. (verb)

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• "At 11: 12 p.m., during McGarvey's attack run, the aircraft trailing McGarvey's by approximately eight miles reported seeing a brilliant orange flash mushrooming from the area of the lead aircraft, after which no radio contact could be established with the aircraft."
• "You call a mushrooming unemployment rate of 10.2% a "trend starting to reverse"?"
• "The Ugandan government said Saturday it would strengthen anti-gay laws and step up police operations against homosexuals amid concern over the "mushrooming" number of gays and lesbians in the East African nation."