1. a small instrument package carried by a weather balloon that transmits atmospheric data such as temperature, humidity, and pressure back to ground stations
Usage: meteorological

Examples

• The weather service launches radiosondes twice daily to collect upper-atmosphere data.
• Scientists tracked the radiosonde as it ascended through different atmospheric layers.
• The radiosonde transmitted temperature readings every few seconds during its flight.
• Weather forecasters rely on radiosonde data to predict storm patterns.
• The balloon carried the radiosonde to an altitude of 100,000 feet.
• Radiosonde measurements help meteorologists understand atmospheric conditions.