|1.||(among Native Americans) a professional practitioner of ritual incantations or other actions intended to cause rain to fall|
|2.||informal chiefly (US) an influential employee who creates a great deal of business or revenue for his or her firm|
any process of increasing the amount of precipitation discharged from a cloud. Primitive methods, such as rain dances or the throwing of pebbles into water, failed to produce rain, but modern techniques of seeding supercooled clouds-that is, those clouds containing liquid water droplets at temperatures below 0 C (32 F)-with frozen carbon dioxide or silver iodide offer some possibility of increasing rainfall amounts.
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