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Meaning of rocketsonde

rock•et•sonde

Pronunciation: (rok'it-sond"), [key]
— n. Meteorol.
  1. a telemeter for gathering data on the atmosphere at very high altitudes, carried aloft by rocket and returned to earth by parachute.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.