| 1. | (among American Indians) a medicine man who by various rituals and incantations seeks to cause rain. |
| 2. | a person who induces rainfall by using various scientific techniques, as the seeding of clouds with silver iodide crystals from an airplane. |
| 3. | Slang. an executive or lawyer with exceptional ability to attract clients, use political connections, increase profits, etc.: The president has several rainmakers among his advisers. |
rainmaker
rainmaking
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.
Learn more about rainmaking with a free trial on Britannica.com.