a telemeter for gathering data on the atmosphere at very high altitudes, carried aloft by rocket and returned to earth by parachute.
Origin of rocketsonde
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
An instrument transported to the upper atmosphere by rocket, used to study meteorological conditions. A rocketsonde is capable of measuring and transmitting information to altitudes of about 76,000 m (249,280 ft).
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