![rocketsonde rocketsonde](https://www.tekportal.net/wp-content/uploads/2018/11/rocketsonde.jpg)
noun Meteorology.
- a telemeter for gathering data on the atmosphere at very high altitudes, carried aloft by rocket and returned to earth by parachute.
- 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).